今天，我们谈谈什么是现在完成进行时。

Today, we are going to talk about the present perfect continuous tense.

youdao

这里用现在完成进行时。

He has been waiting here for two hours.

youdao

现在完成进行时，表示从过去到现在一直在等待。

We've been waiting for it for long.

youdao

他一直学英语六年了，十分喜欢它。（现在完成进行时）

English for six years and really loves it.

youdao

现在完成时有否定结构、而现在完成进行时没有否定结构。

We have been waiting for you for half an hour.

youdao

现在完成时有否定结构、而现在完成进行时没有否定结构。

We have been waiting for you for half an hour.

youdao