Present Perfect Tense

source: Learn English with EnglishClass101.com     2017年9月28日
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source: Learn English with EnglishClass101.com     2017年12月5日
In this English grammar lesson you will learn how to use the present perfect tense in English. You will know how to use it to express a life experience that happened at an unspecific or unimportant. You will be able to use it as well to express an action that started in the past and continues to the present, or the effect of that action.
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