由since、for引导的时间状语,谓语动词要用现在完成时.
例如:I have been here since 2009.
I have been here for two years.
Great changes ------ in China since 1978
Great changes ------ in China since 1978
是took place 还是用现在完成?过去完成
是took place 还是用现在完成?过去完成
英语人气:196 ℃时间:2019-09-24 05:41:49
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