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

今天，我们要学习现在完成时和现在完成进行时。

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

这些是现在完成时和现在完成进行时之间的差异。

It's the present perfect and you can't use 'when' with the past simple and the present perfect.

这是现在完成时，“when”和一般过去时和现在完成时不能一起使用。

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

所以你会用现在完成时或现在完成进行时来回答。

We've got the present perfect continuous.

我们看到了现在完成进行时。

The present perfect verb here is " have lost" .

这里表示现在完成式的动词是" have lost" 。

Mistake number five, past simple or present perfect.

第五类错误，一般过去时还是现在完成时。

I've used the present perfect tense here.

我在这里用了现在完成时。

We use the present perfect and the present perfect continuous for both finished and unfinished actions.

我们用现在完成时现在完成进行时表示完成和未完成的动作。

Please make a sentence using the present perfect tense.

请以现在完成式的时态造句。

Don't confuse this structure with the present perfect.

不要把这个结构和现在完成时混淆。

And so I have a lot of present perfect here.

所以我在这里使用了很多现在完成时。

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

同样地，这里我使用了现在完成时。

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

现在完成时经常和很多副词连用。

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

大概在这里，我们会用现在完成时。

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

或者遇到用现在完成时提出的问题时：“你曾经忘记过一个重要的数字吗？”立即，用现在完成时回答。

Okay, there has been, present perfect.

There has been，现在完成时。

The answer is the first one is a present perfect.

答案是第一个例子用现在完成时。

Ambush is always preferable when the terrain presents perfect color.

周边环境理想时，狮子更喜欢打伏击战。

We cannot use the present perfect conditional.

我们不能使用现在完成条件句。