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定语从句强调句型
强调句型中的It是没有实在含义的，It be...that 只是一个句型。判断是否是强调结构，就把It be...that去掉，如果句子意思通顺，就是强调结构，否则，就不是。以下是小编为大家整理分享的定语从句强调句型，欢迎阅读参考。
定语从句强调句型
强调句型不是用来强调定语从句的而是用来强调非谓语部分的
Mary bought the book in the store yesterday.
强调主语：It was Mary that bought the book in the store yesterday.
就是Mary昨天在店里买了书.
强调宾语：It was the book that Mary bought in the store yesterday.
Mary昨天在店里就是买了这本书.
强调地点状语：It was in the store that Mary bought the book yesterday.
Mary昨天就是在这家店里买了书.
强调时间状语：It was yesterday that Mary bought the book in the store.
Mary就是昨天在店里买了书.
强调句型中的It是没有实在含义的，It be...that 只是一个句型。判断是否是强调结构，就把It be...that去掉，如果句子意思通顺，就是强调结构，否则，就不是。
请比较：
It is the factofy that I visited last year.这是强调句型，“去年，我参观的就是这个工厂。”
This is the factofy that I visited last year.这是定语从句，这就是我去年参观的工厂。
定语从句知识点
一、名词性从句：
1.主要包括主语从句，宾语从句，表语从句和同位语从句。一般由that 引起，也可由who, what, when, why, which, whom, whether, how 引起。
2.主语从句很多情况下都可以放到句子后面，而用代词it作形式上的主语。
3.形式宾语
4.由名词性关系代词whatever, whoever, whichever 等引起的宾语从句
5. whether and if 都能引导从句，但用法有所不同。当主语从句直接位于句首时，应用whether,而不用if. Whether 后能直接or not, 但if 不能。
Whether he will come or not is not known.
6.在名词reason后的表语从句必须用that引导，不可误用 because.
The reason why he is often late for class is that he has the bad habit of getting up late in the morning.
二、定语从句
1.引导定语从句的关系词有who, whom, whose, that, when, where, why and which. 在非限制定语从句中，只可用which, who, whose, where , when., 如果指代前面整个句子， 多用which.
2.当引导定语从句的先行词前有all, any, no, little, much, very first 等词，或先行词前为形容词最高级所修饰时，或先行词为all, anything, nothing, something, everything 时，从句的引导词只能用that.
3.as 可做引导词引导定语从句， 多和such, the same 连用。As 引导的定语从句也可修饰整个句子，既可放在先行词后，也可放在句子开头。
4.介词+which/whom/whose从句
5.代/名+介词+which 从句
6.同位语从句和定语从句
三、定语从句的关系词
引导定语从句的关系词有关系代词和关系副词，常见的关系代词包括that, which, who（宾格whom,所有格whose）等，关系副词包括where, when, why等。关系代词和关系副词放在先行词及定语从句之间起连接作用，同时又作定语从句的重要成分。
四、定语从句的分类
根据定语从句与先行词的关系，定语从句可分为限制性定语从句及非限制性定语从句。限制性定语从句紧跟先行词，主句与从句不用逗号分开，从句不可省去，非限制性定语从句主句与从句之间有逗号分开，起补充说明作用，如省去，意思仍完整。
五、关系代词的用法
1.that 既可以用于指人，也可以用于指物。在从句中作主语或宾语，作主语时不可省略，作宾语可省略。例如：
Mary likes music that is quiet and gentle.玛丽喜欢轻柔的音乐。（that作主语）
The coat （that） I put on the desk is blue.我放在桌子上的那件外套是蓝色的。（that作宾语）
2.which用于指物，在句中作主语或宾语，作主语不可省略，作宾语可省略。例如：
The building which stands near the train station is a supermarket.位于火车站附近的那座大楼是一家超市。（作主语）
The film （which）we saw last night was wonderful. 我们昨天晚上看的那部电影很好看。（作宾语）
3.who， whom用于指人，who 用作主语，whom用作宾语。在口语中，有时可用who代替whom， 也可省略。例如：
The girl who often helps me with my English is from England.经常在英语方面帮助我的那个女孩是英国人。（作主语）
Who is the teacher （whom）Li Ming is talking to? 正在与李明谈话的老师是谁？（作宾语）
六、关系副词的用法
（1）when指时间，其先行词表示时间，在句中作时间状语。例如：
This was the time when he arrived.这是他到达的时间。
（2）where指地点，其先行词表示地点，在句中作地点状语。例如：
This is place where he works.这是他工作的地点。
（3）why 指原因，其先行词是原因，起原因状语作用。例如：
Nobody knows the reason why he is often late for school. 没人知道他为什么上学总迟到。
初中定语从句知识点小测试
1.—Do you know the man ______is talking with your father？
—Yes， he’s our headmaster.
A. he
B. who
C. which
D. whom
2. Is this the river _____I can swim？
A. which
B. in which
C. that
D. the one
3. This is the best hotel in the city _____I know.
A. where
B. which
C. that
D. it
4. Can you lend me the dictionary ______the other day？
A. that you bought
B. you bought it
C. that you bought it
D. which you bought it
5. Anyone ______with what I said may put up you hands.
A. which agrees
B. who agree
C. who agrees
D. which agree
6. My watch is not the only thing ______ is missing.
A. that
B. it
C. which
D.who
7. The man ______coat is black is waiting at the gate
A. who’s
B. whose
C. that of which.
D. whom
8. The girl ______ is reading under the tree _____my sister.
A. which； is
B. whom； was
C. who； is
D. who； was
9. I love places ______the people are really friendly.
A. that
B. which
C. where
D. who
10. The world ______ is made up of matter.
A. in that we live
B. on which we live
C. where we live in
D. we live in
答案
1-5 BBCAC 6-10 ABCCD
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