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

所以你会用成或成进行来回答。

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

今天，我们要学习成和成进行。

The present perfect continuous has a use that is the same as the present perfect simple.

成进行有个用法，这个用法和成是。

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

这些是成和成进行之间差异。

Ambush is always preferable when the terrain presents perfect color.

周边环境理想，狮子更喜欢打伏击战。

The present perfect simple and continuous tenses.

成和成进行。

I've used the present perfect tense here.

我这里用了成。

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

同地，这里我使用了成。

We've got the present perfect continuous.

我们看到了成进行。

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

大概这里，我们会用成。

Please make a sentence using the present perfect tense.

请以成式态造句。

Or when asked in the present perfect, " Have you ever forgotten an important number? " Immediately, present perfect.

或者遇到用成提出问题：“你曾经忘记过个重要数字吗？”立即，用成回答。

Don't confuse this structure with the present perfect.

不要把这个结构和成混淆。

If the question is being asked in present perfect, then definitely use present perfect in your answer.

如果问题是用成问，那么定要回答中使用成。

Okay, there has been, present perfect.

There has been，成。

Answer this conditional and this present perfect question.

回答这个条件问句和这个成问句。

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

成经常和很多副词连用。

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

" How long" 经常用于成。

And so I have a lot of present perfect here.

所以我这里使用了很多成。

I've got another present perfect sentence.

还有另个成句。