Wish or If only
We use wish or if only when we want to describe imaginary or unreal situations. These are often regretes
- If only I were taller
- I wish I had been a good photographer.
Wish + object + would is used to complain:
- I wish you would be quiet!
It´s time, It´s high time, It´s about time
We use those above + past tence to say something should be happening now but isn´t. Besides, it is often used for criticizing someone or something.
- It´s high time you stopped acting like a child.
- It´s about time you finished that homework.
Would rather
We use Would rather + simple past to describe preferences.
- I´d rather she gave me the cash.
- We´d rather you had not taken photos.
We use would rather + base form when the person who expresses the preference and the subject are the same.
- I´d rather dance salsa than tango.
- I´d rather know the truth now than later.
These expression are often to refure permission:
- I´d rather you didn´t smoke in my home.
What if or Suppose
We use what if or suppose + past tense to ask about an imaginary situation in the present or future:
- Suppose you asked the bank for a loan?
- What if we had arrived earlier?
- What if your plan doesn´t work?

