Maybe you noticed this structure is called the causative.

也许你注意到这结构被称为使。

The causative verb or the other verb?

使词还是另一词？

It's the causative verb that takes the tense.

使用时态的是使词。

There are more than 10 causative verbs in English.

英语中有 10 多使词。

No causative studies has ever shown artificial sweeteners causing weight gain.

没有任研究表明人造甜味剂会导致体重增加。

Right, let's get started with the causative verbs.

好的，我们开始讲解使词。

It's about the causative verbs 'have' and 'get'.

内容关于使词 have 和 get。

However, in about 40% to 25% of the cases the causative genes are still unknown.

但是，有40％至25％病例的致病基因仍然未知。

In this lesson, we're looking at causative verbs.

本节课，我们要学习使词。

Now you know the meanings of the three most common causative verbs.

现在你知道了三最常见的使词的意思了。

We are going to be talking about causative verbs, in particular, have, make, get, help and let.

我们将讨论释义词，特别是 have，make，get，help 和 let。

As I said before, we're looking at five verbs that we use with causative structures.

就像我之前说的那样，我们要学习五使用使结构的词。

When we want to talk about that, we use causative verbs.

当我们想谈论这问题时，我们使用使词。

Now there are two ways that we can use have as a causative verb.

我们使用 have 作为使词有两种方式。

Last week we looked at the meanings of three common causative verbs.

上周我们学习了三常见使词的意思。

Some are in the causative structure; some are not in the causative structure.

有些在使结构中；有些不在使结构中。

There's the causative verb, then the person who does the action, and then the action.

首先是使词，然后是做作的人，最后是作。

Let's look now at causative make and let.

现在让我们看看因果关系 make and let。

This causative verb is used to say that we forced someone or something to do something.

这使词被用来说我们强迫某人或某事做某事。

While adenovirus is a possible hypothesis, investigations are ongoing for the causative agent.

虽然腺病毒是一种可能的假设， 但正在对病原体进行调查。