Grammar 6: Verb Tense

Grammar 5: Verb Tense
2016年2月1日
pictures words 6a
2016年8月2日

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

现在完成时

FORM:[has/have + past participle]

形式:[has/have + 过去分词]

USE 1 Unspecified Time Before Now

运用1:在此之前未指定的时间

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.

我们用现在完成时来说明一个动作发生在此之前的一个未定的时间,具体时间不重要,你不能用现在完成时的具体时间的表达方式如:昨天,一年前,上周,当我还是一个孩子的时候,当我在日本生活,在那一刻,那一天,一天等,我们可以用现在完成时的非特定时间的表达方式如:曾经,永远,一旦,很多次,许多次,以前,到目前为止,已经,还没有等等。

Examples:

例如:

I have seen that movie twenty times.

我已经看过那部电影20次了

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

运用2.持续的时间从过去到现在,(非连续动词)

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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