职高英语it用法公开课课件.ppt

1、You are Great !Believe yourself !Look at the pictures to answer the questions:Whats this?Its a book.What time is it?Its eight oclock.Where is the dog?Its under the bed.It is never too old to learn.活到老，活到老，学到老。学到老。What is the meaning of this sentence？1.It is a book.2.It is eight oclock.3.Its under th

2、e bed.4.It is never too old to learn.教学目标教学目标:1.知识、技能目标：知识、技能目标：能够准确分析能够准确分析it在句子在句子中的不同作用，并灵活的运中的不同作用，并灵活的运用到日常对话及练习中。用到日常对话及练习中。2.情感目标：情感目标：合作精神，独立完成任合作精神，独立完成任务的能力。务的能力。一、一、it作作代词代词:新课新课Its lovely.How is the dog?itit代替上文提到代替上文提到的的the dogWho is the lovely baby?Its Mr.Blacks son.i it t代替代替婴儿婴儿Who i

3、s it?Its me.身份不明确的身份不明确的人人代替代替未出场的未出场的What do you think of the cartoon?-Its one of the best cartoons that Ive seen.代替上文中的代替上文中的 the cartoonIts lovely.Its Mr.Blacks son.Who is it?-Its one of the best cartoons that Ive seen.1.作人称代词作人称代词(代替前面提到的人或物代替前面提到的人或物)Its a dog.Whats this?itit代替代替thisthisWhats t

4、hat?Its a rose.2.作指示代词作指示代词it代替代替thatIt was time to get up.it指代时间指代时间It is 10 kilometers to the city.it指代距离指代距离Its sunny.Whats the weather like today?指代天气指代天气itIt was time to get up.It is 10 kilometers to the castle.Its sunny.3.作非人称代词作非人称代词指代指代时间时间,距离距离,价值价值,天气天气,环境，自然现象环境，自然现象等等It is bad to smoke.=

5、To smoke is bad.It is a surprise to see so big a cock.看到如此大的一只公看到如此大的一只公鸡鸡是一件很惊讶的事是一件很惊讶的事情。情。=To see so big a cock is a surprise.遵循英语语言的遵循英语语言的尾重原则尾重原则,避免避免句子头重脚轻句子头重脚轻,常用常用itit作形式主作形式主语！语！考试进行中考试进行中.作作 弊？弊？No use！急急!急急!急急!It is no good cheating in the test.It is very clear that the girl is tall.It

6、 is said that Zhou Jie lun will come our city.(1)It is bad to smoke.(2)It is a surprise to see so big a cock.(3)It is no good cheating in the test.(4)It is very clear that she is tall.(5)It is said that Zhou Jie lun will come our city.二二.作形式主语。真正主语置于句后，真正作形式主语。真正主语置于句后，真正主语通常为不定式、主语通常为不定式、V-ing,主语从句

7、。主语从句。It 做形式主语句型结构：做形式主语句型结构：(1)It is bad to smoke.(2)It is a surprise to see so big a cock.(3)It is no use cheating in the test.(4)It is very clear that he is tall.(5)It is said that Zhou Jie lun will come our city.It+be+adj.n.p.p.（表语）（表语）+to do sth.doing sth.clause(真正主语）真正主语）找规律找规律1.学习英语很有趣。学习英语很有

8、趣。It is interesting2.嘲笑别人是不好的。嘲笑别人是不好的。It is no good3.据说他已经通过了考试。据说他已经通过了考试。It is said试一试试一试to study English.that he has passed the exam.laughing at others._I think it important to read English every day.He found it difficult to get up early.I think it no use talking to him.We think it best that you

9、 should do more exercise.I think it important to read English every day.He found it difficult to get up early.I think it no use talking to him.We think it best that you should do more exercise.三三.it作形式宾语。真正宾语放在作形式宾语。真正宾语放在 宾语补足宾语补足语后面，真正宾语通常为不定式语后面，真正宾语通常为不定式,V-ing,宾宾语从句。语从句。It 做形式宾语句型结构：做形式宾语句型结构：I

10、 think it important to read English every day.He found it difficult to get up early.I think it no use talking to him.We think it best that you should do more exercise.主语主语+thinkfindfeelmake+it+adj./n.（宾补）（宾补）+to dodoingclause(真正宾语）真正宾语）找规律找规律1.我觉得和你聊天很好。我觉得和你聊天很好。to chat with you.2.我认为像那样说话是很聪明的。我认为

11、像那样说话是很聪明的。I think it clever试试 一一 试试I feel it goodtalking like that._原句：原句：I met him in the street yesterday.It was I who/that met him in the street yesterday.强调主语用主格强调主语用主格昨天在街上遇见他的是昨天在街上遇见他的是我我。原句：原句：I met him in the street yesterday.It was him that/whom I met in the street yesterday.强调宾语用宾格强调宾语用宾

12、格我昨天在街上遇见的是我昨天在街上遇见的是他他。It was in the street that I met him yesterday.昨天我是昨天我是在街上在街上遇见他的。遇见他的。原句：原句：I met him in the street yesterday.强调强调地点状语地点状语?It was yesterday that I met him in the street.原句：原句：I met him in the street yesterday.我是我是昨天昨天在大街上遇见他的。在大街上遇见他的。强调时间状语强调时间状语?It was I that/who met him in

13、 the street yesterday.It was him that/who/whom I met in the street yesterday.It was in the street that I met him yesterday.It was yesterday that I met him in the street.四四.强调句强调句构成构成:It is/was+被强调部分被强调部分+that/who/whom+其它成分其它成分It is May 20 today and it is a sunny day.The lazy sheep decides to go for

14、a walk to the park,though it is two miles away.It is clear that the lazy sheep is very happy today.What are the use of“it”?It is spring now and it is warm.Its about 10 a.m.and it is quiet in the park.She think it good to fall asleep in the park!When the lazy sheep wake up,it is dark.It is a day that

15、 he would never forget.Summary(总结总结 ):代词代词 it 本意本意它它,既可指这又指那既可指这又指那;时间天气均可指时间天气均可指,谈到距离也用它谈到距离也用它;形式主宾均可做形式主宾均可做,强调句型跟强调句型跟that。Remember the Proverbs(谚语谚语)with“It”.It is never too old to learn.活到老，学到老。活到老，学到老。It is easier to fall than to rise.摔倒容易爬起来难。摔倒容易爬起来难。It is no use crying over spilt（溢出的）（溢出的）milk.覆水难收。覆水难收。It never rains but it pours(泼水泼水).不鸣则已，一鸣惊人。不鸣则已，一鸣惊人。It is easy to open a shop but hard to keep it always open.创业容易守业难。创业容易守业难。