英语主语从句ppt课件

1、Subject Clause主语从句主语从句1;.2Subject Clause3主语从句三要素主语从句三要素主语从句定义主语从句定义Subject Clause4主语从句三要素主语从句三要素主语从句定义主语从句定义Subject Clause5Find out the Subject in the following sentences:1. A tree has fallen across the road.2. She is from China.3. To find your way can be a problem.4. Smoking is bad for you.5. What

2、she said is not true.6.Whenever you finish the task is certainly all right.名词代词不定式动名词句子句子Subject ClauseConclusion: A clause (subordinate clause) which serves as subject of a sentence can be called Subject Clause.6观察以下句子，注意主语从句的特点：观察以下句子，注意主语从句的特点：That the earth travels round the sun is a well-known

3、fact.Whether the artist can do it or not is uncertain.Why he did it remains a mystery.Whoever breaks the law will be punished.Subject Clause7主语从句三要素主语从句三要素主语从句定义主语从句定义Subject Clause8Subject Clause9主语从句的引导词主语从句的引导词从属连词：that, whether连接代词：who(ever), which(ever), what(ever)连接副词：where(ever), when(ever),

4、why, howSubject Clause主语从句引导词的选择主要是根据从句的结构和意义来选择：101.1.连接词：连接词：that; whetherthat; whether 如果从句的意义和结构完整，则选用that或whether。 -thatthat 本身没有意义，不作句子成分，只表示从句的开始，位于句首时，that不能省略.-whetherwhether表示 “是否”，不作句子成分,位于句首。1） _people cut down too many tress destroyed the balance of nature._we will go camping tomorrow d

5、epends on the weather._the solid shape would last or not is not clear._you will win the medal seems unlikely.ThatWhetherWhetherThat112. 2. 连接代词：连接代词： who, which, what（什么，所的）,whose,whomWhoever / whichever / whatever在主语从句中不含有疑问意义。如果从句的意义和结构不完整不完整，根据从句的意义和结构选择相应的连接代词。连接代词在从句中起名词性作用名词性作用，担当一定成分（主语、宾语、表语

6、等）。Subject Clause1._will take part in the meeting has not been decided.2. _student will win first is uncertain.3. _I cant understand is why he has changed his mind.4. _fails to see this will make a mistake.5. _ was said here must be kept secret. Who Which What Whoever Whatever123. 3. 连接副词：连接副词：where

7、(ever), when(ever), why, how连接副词when, where, why, how在从句中作(时间、地点、原因、方式)状语。1）_ we should leave it is a problem.2）_he will be back depends on the weather.3)_this happened is not clear to anyone.4) _these Greek statues are in a British museum is an important part of our story today.Subject Clause Where

8、 When HowWhy13总结总结做题突破方法三部曲 一、首先分清主句和从句 二、分析从句缺何种成分 三、根据分析，选择恰当的连接词Subject Clauseeg._they would support us was a problemWhether 14主语从句定义主语从句定义Subject Clause主语从句三要素主语从句三要素主语从句的考查难点主语从句的考查难点15主语从句的考查难点主语从句的考查难点 主语从句有时为了使句子结构平衡，避免句子“”头重脚轻“”，常用itit作形式主语代替主语从句，放于句首，而把真正的主语（即主语从句）置于句末。主语从句后的谓语动词一般用单数形式。 常

9、用句型如下： （1）It + be + 名词 + that从句 名词有（no wander, an honor, a pity, a fact, a shame, good news, a surprise, etc ） 1. _(遗憾的是)that we lost the game.2. _(惊奇的是)that he cheated in the exam.3. _(事实是)that English is being accepted as an international language.4. _(不足为奇的是) that computers are taking over the wo

10、rld.It is no wonder It is a pityIt is a surpriseIt is a factSubject Clause16（2）It + be + 形容词 + that从句 形容词有（obvious, true, natural, good, wonderful, funny, no surprising, possible, certain, likely, fortunate, doubtful, etc） 1. _ (有必要) that an efficient worker ( should) accomplish his work on time2. _(重要的是)that you (should) think before you say or do anything3. _ (很明显)that this measure is effective.Subject ClauseIt is obvious It is necessary It is imporatant that常含有一个表示“有必要