If it is at the end of the relative clause, the sentence is less formal.

如果它出现在定语句句末，句子就会不那么正式。

Relative clause, adjective clause, what are we talking about? That sounds confusing!

关系句，形容词句，我们在说什么呢？完全听不懂啊！

And that's when they're used in relative clauses to introduce adjective clauses.

那就是在形容词性的定语句里面。

Learning about relative clauses can help you to connect your ideas in complex sentences.

学习关系句可以帮助你在复杂的句子中将不同想法进行连接。

Relative clauses are another useful topic if you want to improve your sentence grammar.

如果你想提高你的句子语法水平的话，关系句是另一个非常有用的话题。

This one, however, we're adding more information in this relative clause here.

然而，我们在这个关系句中添加的信息。

We discussed relative clauses in an earlier Everyday Grammar story.

我们在之前的每日语法已讨论关系句。

Let's see how those relative clauses work.

让我们看看在这些关系句中是如何使用 whom 的。

We use them in relative clauses too.

我们也在关系句中使用它们。

This is where we come to adjective clauses, also called relative clauses.

这就是我们要讲的形容词句，也叫关系句。

There is the clauses, so a mixture of subordinate dependent or non dependent clauses, relative clauses.

有句，由属句或非句、关系句混合而成。

So for example, I'm living in London which is a beautiful city. Relative clause, two clauses.

I'm living in London which is a beautiful city.关系句，两个句。

We've just seen that sometimes relative clauses have prepositions in them.

我们刚刚看到，有时候定语句中会有介词。

Thirdly, don't use relative clauses, with who, which, that, where, etc. , unless it's really necessary.

第三，不要用 who、which、where 等引导关系句，除非真的很有必要。

A relative pronoun is used to connect a relative clause to the rest of a sentence.

关系代词用来连接一个关系句和句子的其余部分。

We use relative clauses to give more information about something we've just mentioned.

我们使用关系句来提供关于我们刚刚提到的事情的信息。

Now, in a relative clause, we can use 'who' or 'whom' for people, and 'which' for things.

现在来说一下吧，在一个关系分句里，是人时，用Who，指物时，用Which。

Another common structure is relative clauses, using relative pronouns like who, which or what to link two clauses.

另一个常见的结构是关系句，使用关系代词，如“who”、“what”或“what”来连接两个句。

Now, 'that' is less formal, and it can be used for both people and things in some relative clauses.

That的用法稍微有点不正式。在一些关系分句中，它可以同时用来修饰人和物。

The relative clauses here all begin with 'who' or 'whose'.

这里的关系句都以 who 或 whose 开头。