And past perfect, I was able to add it in.

然后是完成时，我能够加入它。

With this grammar, you're going to use the past perfect.

有了这语法，你就会使完成时。

I had never been to, okay, past perfect.

I had never been to，完成时。

Its formula uses the past perfect in the conditional clause.

它的构成就是在条件里使完成时。

Find sentences with the past perfect tense.

找到带有完成时的子。

And instead of using past perfect forms he uses past simple forms.

这里，他没有完成时而是了一般时。

That's an example of the past perfect.

" had departed" 就是完成时。

So I'm going to tell you about the past perfect continuous.

所以我要跟你们讲讲完成进行时。

" Had been walking" is the past perfect continuous of the verb " walk" .

“Had been walking” 是动词“walk”的完成进行时。

She uses past perfect, present perfect, conditionals, adjective clauses, and other forms of grammar.

她使完成时、现在完成时、条件、形容词从和其他语法形式。

But the last questions can be conditionals present or past perfect.

但最后一问题可以是条件现在完成时或完成时。

To talk about a different past, we need to make that past perfect.

要表示一不同的，我们需要完成时。

Those are the two reasons you use past perfect.

这就是你使完成时的两原因。

Focus now on the past perfect and the past perfect continuous.

请注意完成时和完成进行时。

What about present perfect to past perfect?

那么现在完成时变成完成时呢？

And instead of using past perfect forms he uses past simple forms.

这里，他没有完成时而是了一般时。

Mistake number five, past simple or present perfect.

第五类错误，一般时还是现在完成时。

There is also the past perfect and past continuous tenses.

还有完成时和进行时。

Don't use complicated grammar structures or something like past perfect continuous tense.

不要使复杂的语法结构，或类似完成进行时这样的时态。

To form the negative of the past perfect, we use 'hadn't'.

要构成完成时的否定形式，我们 hadn't。