Third Conditional

 

A past unreal conditional sentence has two clauses: the if  

clause


  (which states the condition) and the result clause (which 


states the result).

The sentence can begin with either the if clause or the result clause and the meaning is the same.

We use a comma when the if clause comes at the beginning 

ofthe sentence. 

Grammar:

If+ Subject + Past Perfect,

Subject + would/could/might+ have+ past participle

If Amy hadn’t died, he would have examined her.

Subject+would/could/might+have+past participle

If+Subject+Past Perfect

Amy would have taken medicine if her parents had brought her to a doctor.