conjunctions such as unless and if....not?
I want to ask you something related to conjuctions, especially unless and if..not.
Plz look at the following sentences.
a -I'll come back home OLOR="Red"]unless[/COLOR] there is a strike.
a'-I'll come back home if there is not a strike.
b-I'll be happy if you don't give it up.
b'-I'll be happy unless you give it up.
As far as I know, I think all the sentences except b' are right.
I'd like to know how and when to use those seemingly similar conjunctions.
Thanks in advance.
Re: conjunctions such as unless and if....not?
I think all of them are right, I can't see any option which cannot.
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