She had run back in the direction she had come此处为什么用 in which .什么用法,请具体分析下.Is this school __ they built last year?为什么一定要用 the one 不能用which/that.

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She had run back in the direction ____ she had come此处为什么用 in which .什么用法,请具体分析下.Is this school ______ they built last year?为什么一定要用 the one 不能用which/that.
She had run back in the direction ____ she had come
此处为什么用 in which .什么用法,请具体分析下.
Is this school ______ they built last year?
为什么一定要用 the one 不能用which/that.

She had run back in the direction ____ she had come此处为什么用 in which .什么用法,请具体分析下.Is this school ______ they built last year?为什么一定要用 the one 不能用which/that.
1.定语从句的关键含义：
1）定语从句只使用句子作定语,修饰名词(即先行词)而已.
定语从句和主句都必须是完整的句子,只是定语从句在语序上会有所不同.
2）定语从句的关系词等同于先行词,并在定语从句中要充当一定的成分.
2.
1）第一题中,主句是：She had run back in the direction.
定语从句是：____ she had come.
先行词是the direction,代入定语从句中去为：
in which she had come=she had come in which
=she had come in the direction
固定短语：in...direction 朝...方向
2）第二题是个一般疑问句,容易搞错.所以一定要把它还原成陈述句来看,即：this school is ____ they built last year.
主句是：this school is _____ .
从句是：____ they built last year.
很明显：此题的主句is后面缺少表语,且此表语就是先行词,即被后面的定语从句所修饰的名词,一定要填入the one作为先行词兼主句的表语.
而引导定语从句的关系代词which/that代替先行词the one,做定语从句中built的宾语,所以该关系代词可以省略不填,即完整的定语从句为：
(which/that) they built last year=they built which/that last year
=they built the one/school last year
3.这两道题目都是考查定语从句的语法,说明楼主可能对此把握不够,希望能对你有所帮助,并望楼主加油学习英语!

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定语从句写完整的话应为：she had come in the direction,所以是“介词+关系代词”。
Is this school ______ they built last year?将这个句子转变为陈述句式就明白了：
This school is the one (that)they built last year.
this 修饰school,是句子的主语。
你说的那种情况应该是这样的问句：
Is this the school_____they built last year?
变为陈述句应为：
This is the schoolthat/which they built last year.

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in which相当于where
Is this school ______ they built last year?将这个句子转变为陈述句式就明白了：
This school is the one (that)they built last year.
this 修饰school,是句子的主语。
你说的那种情况应该是这样的问句：
Is this the...

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