Chapter time clauses & conditionals unit 15 time clauses

Third conditional is used to talk about unreal past:

IF+S+HAD DONE… S+WOULD/SHOULD/MIGHT/COULD+HAVE DONE
If I had seen you when you passed me in the street, I would have said hello. (but I didn’t see you)

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  We also use I wish I had done when we say that we regret something that happened or didn’t happen in the past:
  

I feel sick. I wish I hadn’t eaten so much. (I ate too much)

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  Mixed conditional is used to talk about unreal past in the if part and unreal present or future in the main part or vice versa:
  

IF+S+HAD DONE… S+WOULD DO
IF+S+DID… S+WOULD HAVE DONE
If I hadn’t failed my exam yesterday my father would take me to Paris today.
If I were more intelligent I wouldn’t have failed my test.

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  All the conditionals can start either with the if part or with the main part. If it starts with the if part we put a comma between the two clauses, but if it starts with the main part we don’t need a comma:
  

If I were you, I would I would buy a new car.
I will go to Tashkent alone if you don’t come on time.