The present perfect simple and continuous tenses.

在完成和在完成进。

Today we are looking at the present perfect, and the present perfect continuous.

今天，我们要学习在完成和在完成进。

The present perfect is often associated with a number of adverbs.

在完成经常和很多副词连用。

Those are the differences between the present perfect and the present perfect continuous.

这些是在完成和在完成进间的差异。

I've used the present perfect tense here.

我在这里用了在完成。

Probably here, we would use the present perfect, right?

大概在这里，我们会用在完成。

Don't confuse this structure with the present perfect.

不要把这个结构和在完成混淆。

And again, I've got your present perfect here.

同样地，这里我使用了在完成。

However, sometimes the present perfect continuous cannot be used but the present perfect simple can.

但是，有在完成进不可以使用，但在完成可以。

Okay, there has been, present perfect.

There has been，在完成。

And so I have a lot of present perfect here.

所以我在这里使用了很多在完成。

" How long" is often used with the present perfect verb tense.

" How long" 经常用于在完成。

So you would respond using the present perfect or the present perfect continuous.

所以你会用在完成或在完成进来回答。

These examples show you general ways in which the present perfect is used today.

这些例子向你展示了在完成的一般用法。

Use the present perfect and it'll indicate the action is still going on.

要使用在完成，它会表示动作仍在进。

And we could also use the continuous form of the present perfect here.

我们还可以在这里使用在完成的进。

This example shows you a general way in which the present perfect is used.

这个例子向你展示了在完成的一般用法。

But the present perfect had different uses in the past.

但是在完成在过去有不同的用法。

Answer this conditional and this present perfect question.

回答这个条件问句和这个在完成问句。

Today we are reviewing the present perfect and past perfect verb tenses.

今天我们要复习在完成和过去完成动词态。