Grammar 6: Verb Tense

Grammar 5: Verb Tense
pictures words 6a

Grammar 6: Verb Tense

Perfect tense 完成时

所谓完成时就是已经完成的时态。 包括现在完成时,过去完成时和将来完成时。

Present Perfect 现在完成时

Present Perfect


FORM:[has/have + past participle]

形式:[has/have + 过去分词]

USE 1 Unspecified Time Before Now


We use the Present Perfect to say that an action happened at an unspecified time before now. The exact time is not important. You CANNOT use the Present Perfect with specific time expressions such as: yesterday, one year ago, last week, when I was a child, when I lived in Japan, at that moment, that day, one day, etc. We CAN use the Present Perfect with unspecific expressions such as: ever, never, once, many times, several times, before, so far, already, yet, etc.




I have seen that movie twenty times.


USE 2 Duration From the Past Until Now (Non-Continuous Verbs)


With Non-Continuous Verbs and non-continuous uses of Mixed Verbs, we use the Present Perfect to show that something started in the past and has continued up until now. "For five minutes," "for two weeks," and "since Tuesday" are all durations which can be used with the Present Perfect.

与非连续动词和非连续使用的混合动词,我们使用现在完成时来展现过去的一些事情,并一直持续到现在”5分钟“2周”。和“从星期二起”他们都是可以用来表示现在完成时持续时间的。 Examples: 例如: I have had a cold for two weeks. 我感冒了2个星期了

Past Perfect 过去完成时

Past Perfect 过去完成时

FORM:[had + past participle] 形式:[had + 过去分词]


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