We use them in relative clauses too.

也关系句中使用它。

We discussed relative clauses in an earlier Everyday Grammar story.

之前的每日语法已讨论关系句。

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

关系句，形容词句，说什么呢？完全听不懂啊！

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

这里的关系句都以 who 或 whose 开头。

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

这就是要讲的形容词句，也叫关系句。

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

然而，这个关系句中添加的信息。

Let's see how those relative clauses work.

让看看这些关系句中是如何使用 whom 的。

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

学习关系句可以帮助你复杂的句子中将不同想法进行连接。

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

使用关系句来提供关于刚刚提到的事情的信息。

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。

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

刚刚看到，有时候定语句中会有介词。

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

那就是形容词性的定语句里面。

We use relative clauses to add information about someone we've just mentioned.

使用关系句来添加刚刚提到的人物的信息。

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。

The preposition can be in two positions immediately before the relative clause or at the end of the relative clause.

介词有两个位置，就放定语句前，或放定语句句末。

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。

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。

Defining relative clauses such as these specify which noun we are talking about.

像这些句子就是限定性定语句，限定所讨论的名词是哪个。

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

现来说一下吧，一个关系分句里，是人时，用Who，指物时，用Which。