conjunction

 

depend used to say that something will happen only after something else happens or is true

We'll have the party in the garden if the weather's good.

 

might used to talk about something that might happen or be true

I'm sorry if I've offended you.

 

whether whether

I wonder if he'll get the job.

 

always used to mean always or every time

If you mention his mother, he always cries.

 

noun

 

something which is not certain or not yet decided

There are still a lot of ifs.