section 17 Swam the good grammar

 section 17

Section 17 if 

grammar summary and pre-test

if: position; unless

if: future

I'll phone you if I hear from ALice.

not real/not probable

If dogs could talk, ...

If I go ..., I will ...; If I went ..., I would ...

If I were you ...

could='would be able to'

We could go cycling if ...

unreal past If a had happened,

b would have happened.

test yourself if