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In the last several years we _____(set)up many new factories

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In the last several years we _____(set)up many new factories in our hometown.(用适当形式填空)
have set 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
In the past 30 years China has made great advances in socialist construction.
考点四:表示“第几次做某事,”或在 “It is the best (worst,most interesting ) +名词+that” 后面用现在完成时.
This is my first time that I have visited China.That is the only book that he has written.
This is the most interesting film I have ever seen.