英语完成时态的标志有哪些？

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.