Maybe you noticed this structure is called the causative.

也许你注意到这个结构被称为役。

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

没有任何研究表明人造甜味剂会导致体重增加。

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

本节课，我们要学习役词。

There are more than 10 causative verbs in English.

英语有 10 个役词。

Let's look at another causative verb — have.

我们来看看另一个役词 have。

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

当我们想谈论这个问题时，我们用役词。

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

好的，我们开始讲解役词。

The causative verb or the other verb?

役词还是另一个词？

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。

It's the causative verb that takes the tense.

用时态的是役词。

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

内容关于役词 have 和 get。

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，我们要学习五个用役结构的词。

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

我们用 have 作为役词有两种方式。

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

现在你知道了三个最常见的役词的意思了。

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

有些在役结构；有些不在役结构。

Again you only need to conjugate the causative verb.

同样地，你只需要改变役词的形式。

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

上周我们学习了三个常见役词的意思。

And finally, we have the causative verb " help" .

最后，我们有因果词“ 帮助” .

First of all, " What is the causative" , you're wondering?

首先，“原因是什么”，您想知道吗？