Non-defining relative clauses非限定性定语从句

Relative clauses add extra information to a sentence by defining a noun. They are usually divided into two types –defining relative clauses and non-defining relative clauses.

定语从句是对句子里的名词加入额外的信息。一般来讲，有两种类型的定语从句—限定性定语从句和非限定性定语从句。

Non-defining relative clauses

非限定性定语从句

Look at this sentence.

看看这个例句

‘who is 87’ is a non-defining relative clause. It adds extra information to the sentence. If we take the clause out of the sentence, the sentence still has the same meaning.

‘who is 87’是非限定性定语从句，它给句子增加了额外的信息，如果我们把从句从句子里拿出来，句子的意义没有受影响。

Look at some more examples.

看看更多的例句

Non-defining relative clauses add extra information to sentences.

非限定性定语从句给句子增加了额外的信息。

Defining or non-defining?

限定性还是非限定性？

Remember that defining relative clauses are used to add important information. The sentence would have a different meaning without the defining relative clause.

请记住，限定性定语从句是给句子增加了重要的信息，句子如果没有了定语从句，其意义不同。

The defining relative clause tells us which skirt.

限定性定语从句告诉我们是哪个短裙。

The non-defining relative clause doesn’t tell us which skirt – it gives us more information about the skirt.

非限定性定语从句不会告诉我们是哪个短裙，它给我关于短裙的更多信息。

Non-defining relative clauses can use most relative pronouns (which, whose etc,) but they CAN’T use ‘that’ and the relative pronoun can never be omitted.

而非限定性定语从句能用关系代词which和whose等等，但是它们不能用that，其句子中的关系代词也不可以被省略。

Non-defining relative clauses are more often used in written English than in spoken English. You can tell that a clause is non-defining because it is separated by commas at each end of the clause.

相比起口语，非限定性定语从句更多地用于书写英语，你能辨认出哪个是非限定从句，因为习惯会在每个从句的结尾，用逗号分开。

Non-defining relative clauses非限定性定语从句

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