گرامر حال کامل در انگلیسی

We use the Present Perfect to say that an action happened at an unspecified time before now. The exact time is not important. You cannot use the Present Perfect with specific time expressions such as: yesterday, one year ago, last week, when I was a child, one day, etc. We can use the Present Perfect with unspecific expressions such as: ever, never, once, many times, several times, before, so far, already, yet, etc.

Lesson 30

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