2021版外研版选修三英语 Unit 4 突破 语法大冲关ppt课件.ppt

1、Unit 4 A glimpse of the future 突破突破 语法大冲关语法大冲关 主谓一致() 一、数量概念作主语时的主谓一致 观察例句 1Five minutes isn t enough to finish this work. 2Most of the workers are against the plan. 3A number of students have made up their minds to take part in after- school activities. 4The number of students who have made up thei

2、r minds to take part in after- school activities is 120. 归纳用法 1表示时间、距离、长度、重量等的复数名词短语作主语时， 谓语动词用单数形式。 2some，most，rest 及分数、百分数等作主语时，谓语动词的单 复数根据 some 等所代替的名词而定。 3 “a number of可数名词复数”作主语时，谓语动词用复数形 式。但是， “the number of可数名词复数”作主语时，谓语动词用单 数形式。 即学即练 1 单句语法填空 Many people say 1，000 dollars _(be)a lot of money

3、. About 70 per cent of the earths surface _(cover)with water. The number of the students in middle school _ (be)increasing year by year. The rest of the girls _ (be)fond of music. is is covered is are 二、不定代词作主语时的主谓一致 观察例句 1Each of the books is worth reading. 2Both of the sisters are interested in me

4、dicine. 3All are present at the meeting today. 4All of the information is very important. 5None of them is/are aware of the danger. 归纳用法 1either，each，little，much 等作主语时，谓语动词用单数形式。 2both，few，many，several 等作主语时，谓语动词用复数形式。 3all 指可数名词复数，作主语时，谓语动词用复数形式；若指 不可数名词，作主语时，谓语动词用单数形式。 4none 指可数名词复数，作主语时，谓语动词用单、复数

5、形式 均可；若指不可数名词，作主语时，谓语动词用单数形式。 即学即练 2 单句语法填空 Since everyone _ (be)here，lets begin our meeting. None of the tasks _(have)been finished so far. All _(be)willing to reach an agreement. is has/have are 三、其他情况作主语时的主谓一致 观察例句 1To read English aloud every morning is of great benefit to your English study. 2S

6、taring at someone in public is impolite. 3What he said has been recorded. 4What we badly need are good teachers. 5There is a table and four chairs in the room. 6Mr.Smith，who is now downstairs，is asking to see you. 7The injured of this accident are being taken good care of in hospital now. 归纳用法 1单个动词

7、不定式(短语)、动名词(短语)或从句作主语时，谓语 动词用单数。 2当 what 引导的主语从句表示复数概念时，谓语动词用复数。 3there be 句型中，be 动词的单复数与最靠近它的主语一致。 4定语从句中关系代词作主语，谓语动词与先行词一致。 5theadj.指一类人谓语动词用复数。 即学即练 3 单句语法填空 What I say and think _(be)none of your business. There _(be)an old temple and some ancient trees on the top of the mountain. Having a balan

8、ced diet in our daily life _(be)good to us all. are is is .单句语法填空 1I，who _(be)your close friend，will try my best to help you out of trouble. 2 Few of his family _(be)in support of him， which makes him very sad. 3Listening to music _(make)me relaxed after a busy day. 4The number of students in that s

9、chool _(have)greatly increased in recent years. am are makes has 5It is said that everybody _(be)going to take part in the game this afternoon. 6The rich _(be)not always happier than the poor. 7 The factory used 65 per cent of the raw materials， the rest of which _(be)saved for other purposes. 8Fift

10、y dollars _(be)too expensive for the pen and you should think about it carefully. is are were is .完成句子 1About three- fourths of the surface of the earth _ 地球表面大约 3/4 是水。 2About 50 per cent of the students in our school _ 我们学校大约 50%的学生是女生。 3Since _，lets begin our meeting. 既然大家都到了，我们开始开会吧。 is water are girls everyone is here 4None of the information about him _ 关于他的消息一点儿也没收到。 5How to solve the problem _ at the meeting. 如何解决这个问题将在会上讨论。 6A number of students _ 不少学生来自南方。 has been received is to be discussed are from the south