Third (past) conditional

Very good!

Third (past) conditional

Hi Dmitriy,

The third past conditional exists to describe a situation in the past that did not happen and is impossible to happen now.

We can form third conditional sentences using four common combinations:

1) Had ... would not have

Example: If she had set her alarm clock, she would have got/gotten up late.

2) Had ... would have

Example: If she had set her alarm clock, she would have woken up on time.

3) Had not ... would not have

Example: If you had not driven recklessly, you would not have crashed the car.

4) Had not ... would have

Example: If you had not driven recklessly, you would have avoided the collision.

If I had stayed (verb in past participle form) in Moscow, I would have gone (verb in past participle form) to study the film director's course. (Correct)

I wouldn't have realized (verb in past participle form) that I want to be a zoologist if I hadn't returned (verb in past participle form)  to my city. (Correct. You shifted the main clause to the beginning of the sentence.)

Hope this helps.

Cheers, Lance