（2019版）新人教版选择性必修第一册语法专题主语从句ppt课件.pptx

1、Noun clauses asNoun clauses as the subjectthe subjecta. A tree has fallen across the road.b. You are a student.c. To find your way can be a problem.d. Smoking is harmful to you.e. What she said is not yet known.f. That we shall be late is certain.从句从句= =引导词引导词+ +句（完整句（完整/ /不完整）不完整）翻译：袁隆平最需要的（东西）是时间。

2、翻译：袁隆平最需要的（东西）是时间。a. The thing that/which Yuan needs most is time.b. What Yuan needs most is time.翻译翻译: 我最敬爱的人是袁隆平。我最敬爱的人是袁隆平。a. The person who I admire most is Yuan Longping.b.Who I admire most is Yuan Longping.从句用陈述句语序从句用陈述句语序A. That Yuan Longping is a famous scientist is known to all.B. Whether Y

3、uan Longping could succeed was unknown at that time.C. Why Yuan Longping decided to study agriculture is unknown to the public.D. How the research could be done was a challenging question.E. When Dr. Yuans efforts could pay off was uncertain.F. Where Dr. Yuan can carry out his research is very impot

4、ant. _ Dr. Yuan will set up a new research base is certain. _Dr. Yuan will set up a new research base is uncertain.引导词引导词ThatWhether 1) 从属连词从属连词that和和whether：When/Where/How/Why2) 连接副词连接副词when, where, how ,why_ Dr. Yuan will set up a new research base is uncertain.引导词引导词Tips: step1.从句完整时引导词用：从句完整时引导词

5、用：从属连词从属连词that ,whether,连接副词连接副词when, where, why, how step2.结合语篇，根据句意选取对应一个结合语篇，根据句意选取对应一个 Who I admire is Yuan Longping. What Dr. Yuan need is more time. 引导词引导词 3) 连接代词连接代词who, what, whichWhich method I shall choose hasnt been decided. Whoever comes is welcome. Whatever I have is yours. Whichever y

6、ou want is yours. whatever=anything that whoever=anyone who 引导词引导词 3) 连接代词连接代词whoever, whatever, whichever1. 引导词：引导词： 从属连词从属连词 that, whether； 连接副词连接副词 when, where, how, why。 连接代词连接代词 who, what, which； whoever, whatever, whichever; 主语从句的特点：主语从句的特点：3. 从从句解题步骤？句解题步骤？ 跟定语从句的不同？跟定语从句的不同？Tips:主语从句解题步骤：主语从

7、句解题步骤：1. 找出主句找出主句 谓语动词谓语动词2. 确定从句性确定从句性质（主语从句质（主语从句 ）3. 看从句完整看从句完整性选择引导词性选择引导词4. 看句意确看句意确定引导词定引导词例1.When will he come is not known.规律一、规律一、主语从句一律用陈述语序，主语从句一律用陈述语序， 即主语在前，谓语在后。即主语在前，谓语在后。正：When he will come is not known.例2. He will not come to the meeting this evening is true.正：That he will not come

8、to the meeting this evening is true.规律二、规律二、连词连词that 在从句中无实际意义，在从句中无实际意义， 但不能省略。但不能省略。例3. Which impressed me most is her lovely smiling face.正：What impressed me most is her lovely smiling face.The most impressive movie what I have seen is Titanic.例4. If the meeting will be put off has not been decid

9、ed yet.正： Whether the meeting will be put off has not been decided yet.例5. When he will come are a puzzle.正：When he will come is a puzzle.规律五、从属连词规律五、从属连词that,whether和连接副词和连接副词when,where,how, why引导的引导的主语从句的谓主语从句的谓语动词多用单数第三人称形式。语动词多用单数第三人称形式。When the meeting will begin _ (have) not been decided yet .

10、hasWhen they will start and where they will go _(be)still unknown.When and where the meeting will begin _ (have) not been decided yet .arehas例例6 1. What he needs _ that book. 2. What he needs _some books.规律六、连接代词规律六、连接代词what ，who引导的主语引导的主语从句，可根据表语决定主句动词的单复数形从句，可根据表语决定主句动词的单复数形式式。isare例例7 It is uncer

11、tain that the experiment is worth doing. 注解：一般来说主语从句都是放在注解：一般来说主语从句都是放在 ,但有时为了使句子但有时为了使句子 ,避免避免”头重脚轻头重脚轻”,常用常用 作作 ，从而把主语从句放在，从而把主语从句放在 句首句首保持平衡保持平衡 it 形式主语形式主语后面后面 It is uncertain whether the experiment is worth doing.规律七、规律七、形式主语句式中主语从句引导词形式主语句式中主语从句引导词不不只只that, 还可能是还可能是what,who,whether,when, where

12、,why,how.A. That Yuan Longping is a famous scientist is known to all.B. Whether Yuan Longping could succeed was unknown at that time.C. Why Yuan Longping decided to study agriculture is unknown to the public.D. How the research could be done was a challenging question.E. When Dr. Yuans efforts could

13、 pay off was uncertain.F. Where Dr. Yuan can carry out his research is very impotant.It remains a puzzle _will win the singing competition.What have you learned about noun clause as subject?1. 复习本课主语从句要点。2. 读背handouts中形式主语句型，完成对应翻译练习。3. 完成学考练p73练习1._the factory will employ more new workers is true.2

14、._the witness said was true.3. Every year, _makes the most beautiful kite will win a prize in the Kite Festival.4. _the boy distracts frequently in class is what his teacher wants to know.5._the delayed flight will take off depends much on the weather.ThatWhatwhoeverWhyWhen形式主语常用句型形式主语常用句型: 1) It is

15、 + n. +that It is a pity/shame that. 可惜的是可惜的是 It is a surprise that 令人吃惊的是令人吃惊的是 It is a fact that 事实是事实是 It is common knowledge that 是常识是常识 *_(很可惜很可惜)we lost the match.*_(这是事实这是事实)he cheated in the exam.It is a pity thatIt is a fact that1. 令人吃惊的令人吃惊的是他改变了主意。是他改变了主意。 It is a surprise that he changed

16、 his mind.2. 真可惜真可惜你错过了这么一个好机会。你错过了这么一个好机会。 It is a pity that you missed such a good chance.3. 事实是事实是我们周围的污染正变得越来越严重。我们周围的污染正变得越来越严重。 It is a fact that the pollution around us is becoming more and more serious.2) It is + adj. +that Its certain that 肯定肯定 It is possible/likely that. 很可能很可能 It is obvio

17、us/clear that 很明显很明显 It is true that的确的确 It is necessary important natural. that*_(很可能很可能)she will come back tomorrow.*_(很明显很明显) he is an English.+(should) +doIt is possible thatIt is obvious that1. 很可能他会申请这项工作的。很可能他会申请这项工作的。 It is likely that he will apply for the job.2. 的确我犯了个错误。的确我犯了个错误。 It is tr

18、ue that I made a mistake.3. 有必要我们要学习英语。有必要我们要学习英语。 It is necessary that we should learn English.3) It +不及物动词不及物动词+that It happened that. 碰巧碰巧 It occurred to me that我突然想起我突然想起 It appears/seems that 似乎，好像似乎，好像 It turned out that 原来原来*_(刚好刚好)I was out yesterday.*_(我突然想起我突然想起)I forgot to sent the letter

19、.It happened thatIt occurred to me that1. 好像是我错了。好像是我错了。 It appears that I am wrong.2. 碰巧他得去参加一个会议。碰巧他得去参加一个会议。 It happened that he had to attend a meeting.3. 我突然想起他会说英语。我突然想起他会说英语。 It occurs to me that he can speak English.4. 原来他是原来他是Mary的朋友。的朋友。 It turned out that he was Marys friend.4) It + be +过

20、去分词过去分词+从句从句 It is said that. 据说据说 It is known to all that. 众所周知众所周知 It is reported that. 据报道据报道 It is believed that.据相信据相信;人们相信人们相信 It is suggested that + (should）do. 建议建议*_(据报道据报道)20 people were killed in the accident. *_(建议建议)we should eat more vegetable and do more exercise.It is reported thatIt

21、 is suggested that1.据说他已经去了上海。据说他已经去了上海。Its said that he has gone to Shanghai.2. 众所周知台湾是中国的一部分众所周知台湾是中国的一部分.It is known to all that Taiwan is part of China.3. 有人建议我们应该多做运动。有人建议我们应该多做运动。It is suggested that we should take more exercise.In my opinion, it is very important _ (我学好语法我学好语法) because it can help me with my writing and my sentence structure. _ is known to all that grammar is really a bridge to success. Believe it or not, it doesnt matter _ we can recite all those grammar rules. _ we need to do is try to understand and use the language.Thanks!