B1 中级

现在完成时 (Present perfect)

现在完成时把过去和现在连在一起：表示到现在为止的经历（I have been to Shanghai.）、刚完成并影响现在的事（She has lost her key.）、从过去持续到现在的事（We have lived here for five years.）。结构是 have / has + 过去分词。有具体的过去时间（yesterday, in 2020）时用一般过去时。

结构

have / has + past participle (for, since, ever, never, already, yet)

常见错误

和具体的过去时间一起用。

I have seen him yesterday.

I saw him yesterday. /

I have seen him today.

小测验

I ______ never eaten durian.
have · has · did
显示答案
have — 主语 I 用 have + 过去分词 eaten。
She has ______ in Canada since 2019.
live · lived · living
显示答案
lived — has 后面用过去分词 lived；since 表示从过去持续到现在。
We ______ the film last night.
have watched · has watched · watched
显示答案
watched — last night 是具体的过去时间，用一般过去时。

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