IF/IN CASE there isn't enough evidence, the man will be acquitted
IF
Bring your swimsuit in case YOU'LL WANT/YOU WANT to have a swim.
YOU WANT
If you don't stop smoking, your cough WON'T/DOESN'T get better.
WON'T
If we're lucky, WE HAVE/WE'LL HAVE sold our house by Christmas.
WE'LL HAVE
I'll call you IN CASE/AS SOON AS I find out my results.
AS SOON AS
I'm not going to go to the party unless YOU'LL GO/YOU GO too.
YOU GO
If the weather WILL HAVE IMPROVED/IMPROVES we'll be able to eat outside tonight.
IMPROVES
If he ISN'T ARRIVING/HASN'T ARRIVED by 6.00, we'll go without him.
HASN'T ARRIVED
Call me as soon as YOU'LL FINISH/YOU'VE FINISHED your homework.
YOU'VE FINISHED
I’ll watch telly with you when I'VE HAD/I'LL HAVE my dinner
I'VE HAD
I DON'T/'M NOT GOING TO book our flights until we’ve found a place to stay.
I'M NOT GOING TO
