when to use "might have" , "could have", "might', "

English as a Second Language English Vocabulary, Grammar and Idioms
1

Hello Everyone
Before posting this topic i visited many forum here but i did not get what i want to ask, may be it is already posted.
So i want to ask you people when we should use “might have”, “could have”, "might, “could” properly? please explain me with giving some example so i can clear my doubt thoroughly.
Also if you find any grammatical mistake in my post please let me know & correct it on the hand.
Thanks
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2

Also i want to ask what situation does “might have”, “could have” , “might”, & “could” reflect, i mean present or past??
what is the difference between might have & might??

3

Please help here also. I am waiting for your reply