Mega Goal 6 Student’s Book

Mega Goal 6 Student’s Book

May Have / Might Have
May/Might have + past participle is used to suggest uncertainty or possibility about the past.
I lost my cell phone. I may have left it at school.
You might have dropped it at the restaurant.
Could Have
Could have + past participle is used in two ways: to talk about the past with uncertainty, or to talk about an
option in the past that was not taken.
Do you think I could have left my cell phone at your house?
He could have been a doctor if he hadn’t made the mistake of dropping out of school.
Must Have
Must have + past participle is used for drawing conclusions about the past.
I got lost on the way here. I must have taken a wrong turn somewhere.

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