我搞不懂persent perfect tense,可以教教我吗?
1个回答

present perfect tense

亲：有点多,只能缩减了.

现在完成时的结构：have/has +v-ed(过去分词)

概念：属于现在的时态,动作发生在过去,但于现在情况有关系.

以动词work为例：

肯定式

I/We/You/They have worked.

He/She worked.

否定式

I haven't worked.

He hasn't worked.

疑问式

Have you worked?

Has he worked?

带有下列时间状语

already,never,ever,always,not...yet,now,today,this month,since+具体的时间,for+一段时间

例如：I have worked here for a year.我在这里工作了一年.

I have worked here since 2009.自从2009年以来我就在这里工作了.

亲：每天都开心V_V!

thanks!

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