at the present time
It's now 5.30
Not now; can you wait?
often added for clarity when reporting the situation as it stands
I've been living here 20 years now
They now have three children
immediately
See to it now
as things have turned out; in the light of recent developments
It doesn't matter now
A spring election is now certain
used to express irritation at the latest in a series of similar occurrences
What's the trouble now?
used in narrative to refer to the time in question
It was now snowing heavily
used in conversation or discourse:
to mark a transition, emphasize a point, etc
Now then, let's deal with this other matter
Let me see now, how old is she?
to comfort, exhort, admonish, or respond quizzically
There now, it's all right
as things are or were
By now the hints and rumours were fairly thick — The Economist
for the present
all for now
in the immediate past
He was here just now
occasionally
see them every now and then
let's turn our attention to (something)
Now for breakfast
at one moment … at the next
saying now one thing and now the opposite
used to indicate urgency
Make the move – it's now or never
informal used in enthusiastic response
so far