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Oxford Online English
Present Perfect Verb Tense - English Grammar Lesson
In this lesson, you can learn about the present perfect verb tense in English.
Does your language have anything like the present perfect? Many languages don’t have a similar verb form. This can make it more difficult...
Does your language have anything like the present perfect? Many languages don’t have a similar verb form. This can make it more difficult...
Khan Academy
Khan Academy: Perfect Aspect
You use the perfect verb aspect to express when an action is completed, like 'I have done the dishes.'