if

conjunction

UK /ɪf/

1
in a possible or imagined situation
1. 1a
  used for introducing a situation that may happen or may be real, especially when talking about its results
  If we miss the last bus, we’ll have to walk home.
  If anyone has found a bunch of keys, would they please leave them on my desk.
  if you want/like:
  You can come and stay with us if you want.
  if so (=if this is true):
  Are you planning to return to work, and if so, who is going to look after the baby?
  if not (=if this is not true):
  Has anyone dealt with the technical problems? And if not, why not?
  if necessary/if possible (=if it is necessary/possible):
  We are ready to fight for our rights if necessary.
  I should like to be back here by 10.30 if possible.
  Synonyms and related words
  Conjunctions
  albeit
  although
  and
2. 1b
  used for introducing a situation or condition that must exist before something else happens
  Okay I’ll come with you if you’ll promise not to go too fast.
  only if:
  The rebels say they are ready to stop fighting, but only if the prisoners are released.
  Synonyms and related words
  Conjunctions
  albeit
  although
  and
3. 1c
  used for introducing a situation that does not exist now and is unlikely or impossible, especially when talking about its imaginary results
  If Luke paid more attention in class, he would achieve better results.
  If Freud were alive today, he would approve of our methods.
  If you should happen to meet Diane, would you give her a message.
  If anyone were to complain, I should merely tell them to write to the manager.
  even if:
  I’d never sell this painting, even if they offered me a million dollars.
  Synonyms and related words
  Conjunctions
  albeit
  although
  and
4. 1d
  used for introducing a situation that might have existed in the past but did not exist, especially when talking about what its results might have been
  If I’d known you were coming, I would have had a meal ready for you.
  If the new safety system had been in use, the accident would never have happened.
  Synonyms and related words
  Conjunctions
  albeit
  although
  and
2
used for introducing a situation that always has the same result, meaning, or effect
I always get a headache if I watch too much television.
If you drive without insurance, you’re breaking the law.
Synonyms and related words
Conjunctions
albeit
although
and
3
whether
1. 3a
  used in indirect questions that ask whether something is true
  She asked me if I was fond of music.
  Can you tell me if they’re planning to come?
  Synonyms and related words
  Conjunctions
  albeit
  although
  and
2. 3b
  used when talking about something that is not certain
  I doubt if anyone will be interested in the programme.
  Palmer still hasn’t decided if he’s going to play in Saturday’s match.
  Synonyms and related words
  Conjunctions
  albeit
  although
  and
4
used for introducing the reason that you think someone may want to know something
There are plenty of taxis if you’re in a hurry.
If you really want to know, I’m fed up with this stupid job.
If anyone asks you where I am, I’ll be in the library.
Synonyms and related words
Conjunctions
albeit
although
and
5
used for saying how you feel about a possibility
1. 5a
  used for saying how you feel about the possibility that something may happen or be true
  I’m sorry if I’ve said anything that has caused offence.
  I don’t care if I never see her again.
  Synonyms and related words
  Conjunctions
  albeit
  although
  and
2. 5b
  used when expressing an opinion about an imagined situation
  It would be a pity if they had to cancel the show.
  Wouldn’t it be nice if we could spend more time with the children?
  Synonyms and related words
  Conjunctions
  albeit
  although
  and
6
used in requestsspoken
1. 6a
  used when politely asking someone to do something or when asking for permission to do something
  I would be grateful if you would send me further details of the programme.
  if you don’t mind/if it’s all right with you:
  If you don’t mind, I’d like to sit at the back.
  Synonyms and related words
  Conjunctions
  albeit
  although
  and
2. 6b
  used when politely trying to add something to a conversation or discussion
  If I could just make a suggestion – why don’t we invite Andrew to our next meeting?
  Synonyms and related words
  Conjunctions
  albeit
  although
  and
7
used for introducing a remark that makes your description seem slightly less positive or certain
The stories are basically true, if a little exaggerated.
Donald’s essays are always interesting, if sometimes rather careless.
Synonyms and related words
Conjunctions
albeit
although
and
8
used for referring to something that someone may have noticed, before explaining the reason for it
If I seem angry sometimes, it’s usually because I’m very tired.
Synonyms and related words
Conjunctions
albeit
although
and
9
used for suggesting that something may possibly be more or less, better or worse etc than you have stated
Fodor’s predictions have seldom if ever been proved wrong.
if not:
The changes will affect thousands, if not millions, of ordinary people.
Synonyms and related words
Conjunctions
albeit
although
and
10
spokenused for introducing a negative expression to emphasize that you think something is very surprising or shocking
Well, if that isn’t the stupidest thing I ever heard!
Synonyms and related words
Conjunctions
albeit
although
and

phrases

if anything

if ever

if it were not for/if it had not been for

if I were you

if only

what if...?

if

conjunction

US /ɪf/

1
in a possible or imagined situation
1. 1a
  used for introducing a situation that may happen or may be real, especially when talking about its results
  If we miss the last bus, we’ll have to walk home.
  If anyone has found a bunch of keys, would they please leave them on my desk.
  if you want/like:
  You can come and stay with us if you want.
  if so (=if this is true):
  Are you planning to return to work, and if so, who is going to take care of the baby?
  if not (=if this is not true):
  Has anyone dealt with the technical problems? And if not, why not?
  if necessary/if possible (=if it is necessary/possible):
  We are ready to fight for our rights if necessary.
  I’d like to be back here by 10:30 if possible.
  Synonyms and related words
  Conjunctions
  albeit
  although
  and
2. 1b
  used for introducing a situation or condition that must exist before something else happens
  Okay I’ll come with you if you’ll promise not to go too fast.
  only if:
  The rebels say they are ready to stop fighting, but only if the prisoners are released.
  Synonyms and related words
  Conjunctions
  albeit
  although
  and
3. 1c
  used for introducing a situation that does not exist now and is unlikely or impossible, especially when talking about its imaginary results
  If Luke paid more attention in class, he would get better results.
  If Freud were alive today, he would approve of our methods.
  If anyone were to complain, I would merely tell them to write to the manager.
  If you happen to see Diane, would you give her a message?
  even if:
  I’d never sell this painting, even if they offered me a million dollars.
  Synonyms and related words
  Conjunctions
  albeit
  although
  and
4. 1d
  used for introducing a situation that might have existed in the past but did not exist, especially when talking about what its results might have been
  If I’d known you were coming, I would have made supper for you.
  If the new safety system had been in use, the accident would never have happened.
  Synonyms and related words
  Conjunctions
  albeit
  although
  and
2
used for introducing a situation that always has the same result, meaning, or effect
I always get a headache if I watch too much television.
If you drive without insurance, you’re breaking the law.
Synonyms and related words
Conjunctions
albeit
although
and
3
whether
1. 3a
  used in indirect questions that ask whether something is true
  She asked me if I was fond of music.
  Can you tell me if they’re planning to come?
  Synonyms and related words
  Conjunctions
  albeit
  although
  and
2. 3b
  used when talking about something that is not certain
  I doubt if anyone will be interested in the program.
  Palmer still hasn’t decided if he’s going to play in Saturday’s game.
  Synonyms and related words
  Conjunctions
  albeit
  although
  and
4
used for introducing the reason that you think someone may want to know something
There are plenty of taxis if you’re in a hurry.
If you really want to know, I’m fed up with this stupid job.
If anyone asks you where I am, I’ll be in the library.
Synonyms and related words
Conjunctions
albeit
although
and
5
used for saying how you feel about a possibility
1. 5a
  used for saying how you feel about the possibility that something may happen or be true
  I’m sorry if I’ve said anything that has upset you.
  I don’t care if I never see her again.
  Synonyms and related words
  Conjunctions
  albeit
  although
  and
2. 5b
  used when expressing an opinion about an imagined situation
  It would be a pity if they had to cancel the show.
  Wouldn’t it be nice if we could spend more time with the children?
  Synonyms and related words
  Conjunctions
  albeit
  although
  and
6
used in requestsspoken
1. 6a
  used when politely asking someone to do something or when asking for permission to do something
  I would be grateful if you would send me further details about the program.
  if you don’t mind/if it’s all right with you:
  If you don’t mind, I’d like to sit in the back.
  Synonyms and related words
  Conjunctions
  albeit
  although
  and
2. 6b
  used when politely trying to add something to a conversation or discussion
  If I could just make a suggestion, why don’t we have Maria come to our next meeting?
  Synonyms and related words
  Conjunctions
  albeit
  although
  and
7
used for introducing a remark that makes your description seem slightly less positive or certain
The stories are basically true, if a little exaggerated.
Donald’s essays are always interesting, if sometimes poorly written.
Synonyms and related words
Conjunctions
albeit
although
and
8
used for referring to something that someone may have noticed, before explaining the reason for it
If I seem angry sometimes, it’s usually because I’m very tired.
Synonyms and related words
Conjunctions
albeit
although
and
9
used for suggesting that something may possibly be more or less, better or worse, etc. than you have stated
Fodor’s predictions have seldom if ever been proven wrong.
if not:
The changes will affect thousands, if not millions, of ordinary people.
Synonyms and related words
Conjunctions
albeit
although
and
10
spokenused for introducing a negative expression to emphasize that you think something is very surprising or shocking
Well, if that isn’t the stupidest thing I ever heard!
Synonyms and related words
Conjunctions
albeit
although
and

phrases

if anything

if ever

if it were not for/if it had not been for

if I were you

if only

what if...?

if

noun

UK /ɪf/

1
no ifs ands or buts
used for emphasizing that you are going to do what you have said you will do
On the steps of Downing Street, Johnson had vowed to lead the UK out of the EU, “no ifs, ands or buts”.
Submitted from:
United Kingdom on 25/07/2019
Open Dictionary - July2019

if

noun

US /ɪf/

1
no ifs ands or buts
used for emphasizing that you are going to do what you have said you will do
On the steps of Downing Street, Johnson had vowed to lead the UK out of the EU, “no ifs, ands or buts”.
Submitted from:
United Kingdom on 25/07/2019
Open Dictionary - July2019

单词	if
释义	if conjunction UK /ɪf/ Other entries for this word if noun as if phrase even if phrase if ever phrase if only phrase if desired phrase if anything phrase what if...? phrase if you like phrase if need be phrase if you want phrase if you will phrase if you insist phrase if you please phrase if you ask me phrase see if I care phrase if I were you phrase as if by magic phrase if nothing else phrase if/when in doubt phrase more dictionary definitions DEFINITIONS10 1 in a possible or imagined situation 1a used for introducing a situation that may happen or may be real, especially when talking about its results If we miss the last bus, we’ll have to walk home. If anyone has found a bunch of keys, would they please leave them on my desk. if you want/like: You can come and stay with us if you want. if so (=if this is true): Are you planning to return to work, and if so, who is going to look after the baby? if not (=if this is not true): Has anyone dealt with the technical problems? And if not, why not? if necessary/if possible (=if it is necessary/possible): We are ready to fight for our rights if necessary. I should like to be back here by 10.30 if possible. Synonyms and related words Conjunctions albeit although and 1b used for introducing a situation or condition that must exist before something else happens Okay I’ll come with you if you’ll promise not to go too fast. only if: The rebels say they are ready to stop fighting, but only if the prisoners are released. Synonyms and related words Conjunctions albeit although and 1c used for introducing a situation that does not exist now and is unlikely or impossible, especially when talking about its imaginary results If Luke paid more attention in class, he would achieve better results. If Freud were alive today, he would approve of our methods. If you should happen to meet Diane, would you give her a message. If anyone were to complain, I should merely tell them to write to the manager. even if: I’d never sell this painting, even if they offered me a million dollars. Synonyms and related words Conjunctions albeit although and 1d used for introducing a situation that might have existed in the past but did not exist, especially when talking about what its results might have been If I’d known you were coming, I would have had a meal ready for you. If the new safety system had been in use, the accident would never have happened. Synonyms and related words Conjunctions albeit although and 2 used for introducing a situation that always has the same result, meaning, or effect I always get a headache if I watch too much television. If you drive without insurance, you’re breaking the law. Synonyms and related words Conjunctions albeit although and 3 whether 3a used in indirect questions that ask whether something is true She asked me if I was fond of music. Can you tell me if they’re planning to come? Synonyms and related words Conjunctions albeit although and 3b used when talking about something that is not certain I doubt if anyone will be interested in the programme. Palmer still hasn’t decided if he’s going to play in Saturday’s match. Synonyms and related words Conjunctions albeit although and 4 used for introducing the reason that you think someone may want to know something There are plenty of taxis if you’re in a hurry. If you really want to know, I’m fed up with this stupid job. If anyone asks you where I am, I’ll be in the library. Synonyms and related words Conjunctions albeit although and 5 used for saying how you feel about a possibility 5a used for saying how you feel about the possibility that something may happen or be true I’m sorry if I’ve said anything that has caused offence. I don’t care if I never see her again. Synonyms and related words Conjunctions albeit although and 5b used when expressing an opinion about an imagined situation It would be a pity if they had to cancel the show. Wouldn’t it be nice if we could spend more time with the children? Synonyms and related words Conjunctions albeit although and 6 used in requestsspoken 6a used when politely asking someone to do something or when asking for permission to do something I would be grateful if you would send me further details of the programme. if you don’t mind/if it’s all right with you: If you don’t mind, I’d like to sit at the back. Synonyms and related words Conjunctions albeit although and 6b used when politely trying to add something to a conversation or discussion If I could just make a suggestion – why don’t we invite Andrew to our next meeting? Synonyms and related words Conjunctions albeit although and 7 used for introducing a remark that makes your description seem slightly less positive or certain The stories are basically true, if a little exaggerated. Donald’s essays are always interesting, if sometimes rather careless. Synonyms and related words Conjunctions albeit although and 8 used for referring to something that someone may have noticed, before explaining the reason for it If I seem angry sometimes, it’s usually because I’m very tired. Synonyms and related words Conjunctions albeit although and 9 used for suggesting that something may possibly be more or less, better or worse etc than you have stated Fodor’s predictions have seldom if ever been proved wrong. if not: The changes will affect thousands, if not millions, of ordinary people. Synonyms and related words Conjunctions albeit although and 10 spokenused for introducing a negative expression to emphasize that you think something is very surprising or shocking Well, if that isn’t the stupidest thing I ever heard! Synonyms and related words Conjunctions albeit although and phrases if anything if ever if it were not for/if it had not been for if I were you if only what if...? if conjunction US /ɪf/ Other entries for this word if noun as if phrase even if phrase if ever phrase if only phrase if desired phrase if anything phrase what if...? phrase if you like phrase if need be phrase if you want phrase if you will phrase if you insist phrase if you please phrase if you ask me phrase see if I care phrase if I were you phrase as if by magic phrase if nothing else phrase if/when in doubt phrase more dictionary definitions DEFINITIONS10 1 in a possible or imagined situation 1a used for introducing a situation that may happen or may be real, especially when talking about its results If we miss the last bus, we’ll have to walk home. If anyone has found a bunch of keys, would they please leave them on my desk. if you want/like: You can come and stay with us if you want. if so (=if this is true): Are you planning to return to work, and if so, who is going to take care of the baby? if not (=if this is not true): Has anyone dealt with the technical problems? And if not, why not? if necessary/if possible (=if it is necessary/possible): We are ready to fight for our rights if necessary. I’d like to be back here by 10:30 if possible. Synonyms and related words Conjunctions albeit although and 1b used for introducing a situation or condition that must exist before something else happens Okay I’ll come with you if you’ll promise not to go too fast. only if: The rebels say they are ready to stop fighting, but only if the prisoners are released. Synonyms and related words Conjunctions albeit although and 1c used for introducing a situation that does not exist now and is unlikely or impossible, especially when talking about its imaginary results If Luke paid more attention in class, he would get better results. If Freud were alive today, he would approve of our methods. If anyone were to complain, I would merely tell them to write to the manager. If you happen to see Diane, would you give her a message? even if: I’d never sell this painting, even if they offered me a million dollars. Synonyms and related words Conjunctions albeit although and 1d used for introducing a situation that might have existed in the past but did not exist, especially when talking about what its results might have been If I’d known you were coming, I would have made supper for you. If the new safety system had been in use, the accident would never have happened. Synonyms and related words Conjunctions albeit although and 2 used for introducing a situation that always has the same result, meaning, or effect I always get a headache if I watch too much television. If you drive without insurance, you’re breaking the law. Synonyms and related words Conjunctions albeit although and 3 whether 3a used in indirect questions that ask whether something is true She asked me if I was fond of music. Can you tell me if they’re planning to come? Synonyms and related words Conjunctions albeit although and 3b used when talking about something that is not certain I doubt if anyone will be interested in the program. Palmer still hasn’t decided if he’s going to play in Saturday’s game. Synonyms and related words Conjunctions albeit although and 4 used for introducing the reason that you think someone may want to know something There are plenty of taxis if you’re in a hurry. If you really want to know, I’m fed up with this stupid job. If anyone asks you where I am, I’ll be in the library. Synonyms and related words Conjunctions albeit although and 5 used for saying how you feel about a possibility 5a used for saying how you feel about the possibility that something may happen or be true I’m sorry if I’ve said anything that has upset you. I don’t care if I never see her again. Synonyms and related words Conjunctions albeit although and 5b used when expressing an opinion about an imagined situation It would be a pity if they had to cancel the show. Wouldn’t it be nice if we could spend more time with the children? Synonyms and related words Conjunctions albeit although and 6 used in requestsspoken 6a used when politely asking someone to do something or when asking for permission to do something I would be grateful if you would send me further details about the program. if you don’t mind/if it’s all right with you: If you don’t mind, I’d like to sit in the back. Synonyms and related words Conjunctions albeit although and 6b used when politely trying to add something to a conversation or discussion If I could just make a suggestion, why don’t we have Maria come to our next meeting? Synonyms and related words Conjunctions albeit although and 7 used for introducing a remark that makes your description seem slightly less positive or certain The stories are basically true, if a little exaggerated. Donald’s essays are always interesting, if sometimes poorly written. Synonyms and related words Conjunctions albeit although and 8 used for referring to something that someone may have noticed, before explaining the reason for it If I seem angry sometimes, it’s usually because I’m very tired. Synonyms and related words Conjunctions albeit although and 9 used for suggesting that something may possibly be more or less, better or worse, etc. than you have stated Fodor’s predictions have seldom if ever been proven wrong. if not: The changes will affect thousands, if not millions, of ordinary people. Synonyms and related words Conjunctions albeit although and 10 spokenused for introducing a negative expression to emphasize that you think something is very surprising or shocking Well, if that isn’t the stupidest thing I ever heard! Synonyms and related words Conjunctions albeit although and phrases if anything if ever if it were not for/if it had not been for if I were you if only what if...? if noun UK /ɪf/ Other entries for this word if conjunction as if phrase even if phrase if ever phrase if only phrase if desired phrase if anything phrase what if...? phrase if you like phrase if need be phrase if you want phrase if you will phrase if you insist phrase if you please phrase if you ask me phrase see if I care phrase if I were you phrase as if by magic phrase if nothing else phrase if/when in doubt phrase more dictionary definitions DEFINITIONS1 1 no ifs ands or buts used for emphasizing that you are going to do what you have said you will do On the steps of Downing Street, Johnson had vowed to lead the UK out of the EU, “no ifs, ands or buts”. Submitted from: United Kingdom on 25/07/2019 Open Dictionary - July2019 phrases ifs and buts 1 attempts to argue against doing something or to suggest difficulties Let’s have no ifs and buts, I’m determined to proceed with the plan. Synonyms and related words Arguments argument disagreement conflict it’s/that’s a big if 1 used for emphasizing that something is not certain at all If we move – and that’s a big if – I’ll have to find a new job. Synonyms and related words Not likely to happen unlikely doubtful remote if noun US /ɪf/ Other entries for this word if conjunction as if phrase even if phrase if ever phrase if only phrase if desired phrase if anything phrase what if...? phrase if you like phrase if need be phrase if you want phrase if you will phrase if you insist phrase if you please phrase if you ask me phrase see if I care phrase if I were you phrase as if by magic phrase if nothing else phrase if/when in doubt phrase more dictionary definitions DEFINITIONS1 1 no ifs ands or buts used for emphasizing that you are going to do what you have said you will do On the steps of Downing Street, Johnson had vowed to lead the UK out of the EU, “no ifs, ands or buts”. Submitted from: United Kingdom on 25/07/2019 Open Dictionary - July2019 phrases ifs, ands, or buts 1 attempts to argue against doing something or to suggest difficulties Go clean your room, and I don’t want to hear any ifs, ands, or buts. Synonyms and related words Arguments argument disagreement conflict it’s/that’s a big if 1 used for emphasizing that something is not certain at all If we move – and that’s a big if – I’ll have to find a new job. Synonyms and related words Not likely to happen unlikely doubtful remote
随便看	performance capture performance-enhancing performance-related pay performance review performative performative friendship performer perform/work miracles perfume perfumed perfumery perfunctory perfusion pergola perhaps perhaps someone would care to do something/would someone care to do something? per head periderm perigee peril perilous perilously perilously close to (doing) something perimeter perinatal

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no ifs ands or buts

ifs and buts

it’s​/​that’s a big if

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no ifs ands or buts

ifs, ands, or buts

it’s​/​that’s a big if

if

if

it’s/that’s a big if

it’s/that’s a big if