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Unit 17 :
How long have you…?
現在完成式2
Elementary
Summary
Present Perfect Tense 2
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Grammar Focus
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1.Amy is on vacation in Brazil.
2.She is there now.
3.My sister has never traveled by plane.
4.I’ve never ridden a horse.
5.“Who is that man?” “I don’t know. I’ve never seen him before.”
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Let’s Compare!
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