once

adverb

1
once something, always something
used to say that a person cannot change their fundamental nature
As Rebecca puts it, once a cheater, always a cheater.
Submitted by:
Boris Marchenko from Russian Federation on 12/07/2017
Open Dictionary - July2017

once

adverb

1
once something, always something
used to say that a person cannot change their fundamental nature
As Rebecca puts it, once a cheater, always a cheater.
Submitted by:
Boris Marchenko from Russian Federation on 12/07/2017
Open Dictionary - July2017

once

adverb, conjunction, noun

UK /wʌns/

Once can be used in the following ways:

as an adverb: I only met him once.They’ve been here once before.

as a conjunction: Once you get there, you’ll love it.

as a noun (after ‘for’ or ‘at’): For once I wish you’d tell me the truth. (after ‘the’, ‘this’, or ‘that’): Yes, I met him, but just the once.

1
on one occasion only
Cathy’s only been to visit us once.
I’d seen the show once before, but I enjoyed seeing it again.
I’m only going to say this once, so listen carefully.
(just) the once (=on one particular occasion only):
We met just the once, but I still remember him very clearly.
Synonyms and related words
Happening only once
once
isolated
unrepeatable
2
used for saying that a particular situation existed at a time in the past, but it does not exist any longer
Did you know that Dan was once a policeman?
Louise bought the house where her grandparents had once lived.
The once mighty US car industry was now facing strong competition from abroad.
Synonyms and related words
Existing, happening in or relating to a time in the past
past
ago
previously
1. 2a
  used for saying that something happened at some time in the past
  Once we drove all the way to Edinburgh with four little kids in the back seat.
  I once taught myself to knit, and I was pretty good at it.
  Synonyms and related words
  Existing, happening in or relating to a time in the past
  past
  ago
  previously
3
used for saying that as soon as one thing happens, something else happens
Once we were through the gates, she went off and left me on my own.
I’m sure you’ll be very happy here once you get to know everyone.
Synonyms and related words
After another event or time
after
following
since

phrases

all at once

at once

do something once too often

(every) once in a while

(just) for once

(just) this once

once again/more

once and for all

once every three days/four years etc

once or twice

once upon a time

once a week/month/year etc

once

adverb, conjunction, noun

US /wʌns/

Once can be used in the following ways:

as an adverb: I only met him once.They’ve been here once before.

as a conjunction: Once you get there, you’ll love it.

as a noun (after “for” or “at”): For once I wish you’d tell me the truth. (after “the,” “this,” or “that”): Yes, I met him, but just the once.

1
on one occasion only
Cathy’s only been to visit us once.
I’d seen the show once before, but I enjoyed seeing it again.
I’m only going to say this once, so listen carefully.
(just) the once (=on one particular occasion only):
We met just the once, but I still remember him very clearly.
Synonyms and related words
Happening only once
once
isolated
unrepeatable
2
used for saying that a particular situation existed at a time in the past, but it does not exist any longer
Did you know that Dan was once a policeman?
Louise bought the house where her grandparents had once lived.
The once mighty U.S. car industry was now facing strong competition from abroad.
Synonyms and related words
Existing, happening in or relating to a time in the past
past
ago
before
1. 2a
  used for saying that something happened at some time in the past
  Once we drove all the way to Knoxville with four little kids in the back seat.
  I once taught myself to knit, and I was pretty good at it.
  Synonyms and related words
  Existing, happening in or relating to a time in the past
  past
  ago
  before
3
used for saying that as soon as one thing happens, something else happens
Once we were through the gates, we still had to find our seats.
I’m sure you’ll be very happy here once you get to know everyone.
Synonyms and related words
After another event or time
after
following
since

phrases

all at once

at once

do something once too often

(every) once in a while

for once

(just) this once

once again/more

once every three days/four years etc.

once and for all

once or twice

once upon a time

once a week/month/year etc.

单词	once
释义	once adverb Other entries for this word once adverb, conjunction, noun at once phrase for once phrase once-over noun all at once phrase once or twice phrase (just) this once phrase once again/more phrase once and for all phrase once upon a time phrase once in a lifetime phrase once bitten twice shy phrase once in a blue moon phrase (every) once in a while phrase do something once too often phrase once a week/month/year etc. phrase once every three days/four years etc. phrase DEFINITIONS1 1 once something, always something used to say that a person cannot change their fundamental nature As Rebecca puts it, once a cheater, always a cheater. Submitted by: Boris Marchenko from Russian Federation on 12/07/2017 Open Dictionary - July2017 once adverb Other entries for this word once adverb, conjunction, noun at once phrase once-over noun all at once phrase once or twice phrase (just) for once phrase (just) this once phrase once again/more phrase once and for all phrase once upon a time phrase once in a lifetime phrase once bitten twice shy phrase once in a blue moon phrase (every) once in a while phrase do something once too often phrase once a week/month/year etc phrase once every three days/four years etc phrase DEFINITIONS1 1 once something, always something used to say that a person cannot change their fundamental nature As Rebecca puts it, once a cheater, always a cheater. Submitted by: Boris Marchenko from Russian Federation on 12/07/2017 Open Dictionary - July2017 once adverb, conjunction, noun UK /wʌns/ Other entries for this word once adverb at once phrase once-over noun all at once phrase once or twice phrase (just) for once phrase (just) this once phrase once again/more phrase once and for all phrase once upon a time phrase once in a lifetime phrase once bitten twice shy phrase once in a blue moon phrase (every) once in a while phrase do something once too often phrase once a week/month/year etc phrase once every three days/four years etc phrase DEFINITIONS3 Once can be used in the following ways: as an adverb: I only met him once.They’ve been here once before. as a conjunction: Once you get there, you’ll love it. as a noun (after ‘for’ or ‘at’): For once I wish you’d tell me the truth. (after ‘the’, ‘this’, or ‘that’): Yes, I met him, but just the once. 1 on one occasion only Cathy’s only been to visit us once. I’d seen the show once before, but I enjoyed seeing it again. I’m only going to say this once, so listen carefully. (just) the once (=on one particular occasion only): We met just the once, but I still remember him very clearly. Synonyms and related words Happening only once once isolated unrepeatable 2 used for saying that a particular situation existed at a time in the past, but it does not exist any longer Did you know that Dan was once a policeman? Louise bought the house where her grandparents had once lived. The once mighty US car industry was now facing strong competition from abroad. Synonyms and related words Existing, happening in or relating to a time in the past past ago previously 2a used for saying that something happened at some time in the past Once we drove all the way to Edinburgh with four little kids in the back seat. I once taught myself to knit, and I was pretty good at it. Synonyms and related words Existing, happening in or relating to a time in the past past ago previously 3 used for saying that as soon as one thing happens, something else happens Once we were through the gates, she went off and left me on my own. I’m sure you’ll be very happy here once you get to know everyone. Synonyms and related words After another event or time after following since phrases all at once at once do something once too often (every) once in a while (just) for once (just) this once once again/more once and for all once every three days/four years etc once or twice once upon a time once a week/month/year etc once adverb, conjunction, noun US /wʌns/ Other entries for this word once adverb at once phrase for once phrase once-over noun all at once phrase once or twice phrase (just) this once phrase once again/more phrase once and for all phrase once upon a time phrase once in a lifetime phrase once bitten twice shy phrase once in a blue moon phrase (every) once in a while phrase do something once too often phrase once a week/month/year etc. phrase once every three days/four years etc. phrase DEFINITIONS3 Once can be used in the following ways: as an adverb: I only met him once.They’ve been here once before. as a conjunction: Once you get there, you’ll love it. as a noun (after “for” or “at”): For once I wish you’d tell me the truth. (after “the,” “this,” or “that”): Yes, I met him, but just the once. 1 on one occasion only Cathy’s only been to visit us once. I’d seen the show once before, but I enjoyed seeing it again. I’m only going to say this once, so listen carefully. (just) the once (=on one particular occasion only): We met just the once, but I still remember him very clearly. Synonyms and related words Happening only once once isolated unrepeatable 2 used for saying that a particular situation existed at a time in the past, but it does not exist any longer Did you know that Dan was once a policeman? Louise bought the house where her grandparents had once lived. The once mighty U.S. car industry was now facing strong competition from abroad. Synonyms and related words Existing, happening in or relating to a time in the past past ago before 2a used for saying that something happened at some time in the past Once we drove all the way to Knoxville with four little kids in the back seat. I once taught myself to knit, and I was pretty good at it. Synonyms and related words Existing, happening in or relating to a time in the past past ago before 3 used for saying that as soon as one thing happens, something else happens Once we were through the gates, we still had to find our seats. I’m sure you’ll be very happy here once you get to know everyone. Synonyms and related words After another event or time after following since phrases all at once at once do something once too often (every) once in a while for once (just) this once once again/more once every three days/four years etc. once and for all once or twice once upon a time once a week/month/year etc.
随便看	methodical methodist methodology meths methuselah methyl alcohol methylated spirits meticulous metier me time metonym metonymy #metoo me-too metre metric metrical metrication metrics metric ton metro metro city metrologist metronome metronomic

once

once something, always something

once

once something, always something

once ​‌‌‌

once ​‌‌‌

once

once