现在完成时中标志性的时间状语

 

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.

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 ?

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

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.