Watch this video to learn when and why we say sentences like- Sam has been to Asia. I have worn glasses for five years. I have known Haru since I was in elementary school. All of these sentences use the present perfect verb tense (has/have + pp). After watching this video, you will know the difference between simple past and present perfect, be able to correctly use the present perfect in sentences and know when to use 'for' and 'since'.
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