Let's see how those relative clauses work.

让我们看看在这些关系从句中是如何使用 whom 的。

We use them in relative clauses too.

我们也在关系从句中使用它们。

We discussed relative clauses in an earlier Everyday Grammar story.

我们在之前的每日语法已讨论了关系从句。

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，就放在定语从句前，或放在定语从句句末。

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

关系从句，形容词从句，我们在说什么呢？完全听不懂啊！

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

这就是我们要讲的形容词从句，也叫关系从句。

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

我们刚刚看到，有时候定语从句中会有介词。

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

然而，我们在这个关系从句中添加了更多的信息。

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

我们使用关系从句来添加我们刚刚提到的人物的信息。

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

这里的关系从句都以 who 或 whose 开头。

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

如果它出现在定语从句句末，句子就会不那么正式。

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从句里面。

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

学习关系从句可以帮助你在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.

我们使用关系从句来提供关于我们刚刚提到的事情的更多信息。

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

有从句，由从属从句或非从句、关系从句混合而成。

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从句和句子的其余部分。

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.关系从句，两个从句。

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，关系从句是另一个非常有用的话题。

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 等引导关系从句，除非真的很有必要。

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。