定语从句where怎么用

关系副词where主要用于修饰表地点的名词,同时它在定语从句中用作地点状语。下面是小编为大家收集整理的定语从句where相关内容，欢迎阅读。

　定语从句where的用法

1.当主句中的先行词是表示地点意义的名词时,它只能作其所在的定语从句的地点状语,放在定语从句的'句首.如果定语从句的引导词作该定语从句的主语或宾语时,也要改用关系代词that或which来引导.例如：

This is the room where(＝in which)I lived last year.这就是我去年住过的房间.

Is this the classroom where(=in which) the old worker is going to make/give us a report?这就是那位老工人要给我们做报告的教室吗?

Let's look for a place where we can swim.咱们找一个可以游泳的地方吧.

The building that is being built over there will be a new hospital.正在那边建的楼房将是一家新医院.(引导词that作定语从句"that is being built over there"的主语)

That is the factory (that) they visited last month.那就是他们上个月参观过的工厂.(引导词that作定语从句"(that) they visited last month"的宾语,that可以省略)

2.、where定语从句修饰模糊地点

where引导的定语从句的先行词大多数情况下是表示地点的名词,但也有特殊情况.如果定语从句修饰point,situation,part,condition,activity,case,stage等表示模糊地点的词,关系词在定语从句中充当状语时,常用where 引导,意思是“到了某种地步,在某种境况中” .例如：

You reach a point where medicine can’t help.你已到了药物无法治疗的地步.

　where怎么用

1）将其前面的先行词（必须是名词如the place）代入定语从句中,如果可以直接做从句的主语/宾语,则用关系代词that/which.

如：This is the city (which/that) I visited last year.

其中：(which/that) I visited last year = I visited (which/that) last year = I visited the city last year

2）如果先行词不能直接和句子其他成分连接,而是必须另外再加上介词,然后一起做定语从句的地点状语,则用关系副词where.

如：This is the city where I lived last year.

其中：(where) I lived last year = (in which) I lived last year = I lived (in which) last year = I lived (in the city) last year

3）至于地点状语从句的引导词,只能是where,不可能用which/that的.

只要where引导的定语从句和地点状语从句的区别,楼主需要对句子结构划分有一定的掌握.

即：定语从句只是充当主句中某一个名词/代词的定语,像形容词那样去修饰它；

而地点状语从句则只是充当主句的地点状语,可以把它换写成介宾短语那样的地点状语.