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

今天我们要复习现在完成时和过去完成时动词时态。

You need this in perfect tenses.

在完成时会用到它。

The present perfect simple and continuous tenses.

现在完成时和现在完成进行时。

This is the past perfect tense.

这是过去完成时。

Please make a sentence using the present perfect tense.

请以现在完成式的时态造句。

Find sentences with the past perfect tense.

找到带有过去完成时的句子。

I've used the present perfect tense here.

我在这里用了现在完成时。

The perfect tenses by which I mean the present perfect and the past perfect tenses are quite challenging.

我指的是现在完成时和过去完成时的完成时态是相当具有挑战性的。

I hope you found all of the sentences with perfect tenses.

我希望你找到了所有带完成时态的句子。

The first we will look at is perfect verb tenses.

我们首先来看动词的完成时态。

Did you find some examples of the past perfect tense?

你找到带有过去完成时的句子了吗？

Right here, " I have been wearing" present perfect continuous, great tense.

这里，“I have been wearing”，现在完成进行时，很好的时态。

Present perfect tense, where would have we used the third form of forgive.

这里用的是现在完成时态，所以我们要用“forgive”的完成时。

This is the past perfect tense but also the passive voice.

这是过去完成时，但也是被动语态。

For example, did you make mistakes with conditional sentences, or perfect tenses, or prepositions?

例如，你有在条件句或完成时态或介词上犯过错吗？

The grammar you will hear at that point often includes the present perfect tense.

这时你会听到的语法往往包括现在完成时态。

These are two examples of the perfect tenses.

这是两个完成时。

And finally, it is possible to use the present simple, continuous or perfect tenses.

最后，“if” 从句是有可能用一般现在时，进行时或完成时的。

For example, you may know the present perfect continuous tense.

例如，你可能知道现在完成进行时。

Now since is a preposition of time that is commonly used with perfect tenses.

“Since”是时间介词，通常与完成时态一起使用。