现在完成时,过去完成时,(被动和主动),
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现在完成时表示动作发生在过去,完成在过去,但强调与现在情况仍有联系,其结果或影响仍存在.现在完成时有一些标志性的时间状语：考点一：for + 时间段；since + 时间点They have lived in Beijing for five years.They have lived in Beijing since 1995.I have learned English for ten years.考点二：常见的不确定的时间状语：lately; recently, just, already, yet, up to now; till now; so far, these days, Has it stopped raining yet ? 考点三：在表示“最近几世纪/ 年/ 月以来……”时间状语中,谓语动词用现在完成时.in the past few years/months/weeks/days；over the past few years; during the last three months; for the last few centuries, through centuries; throughout history 等考点四：表示“第几次做某事,”或在 “It is the best (worst, most interesting ) +名词 ＋that” 后面跟现在完成时.This is my first time that I have visited China. This is the most interesting film I have ever seen.That is the only book that he has written.

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