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1、Four short words sum up what has lifted most successful individuals above the crowd: a little bit more.-author-datetoo.to.-与-enough.to.-与-so.that.的区别tootoo.to. 与 enough.to. 与 so.that.的区别 too+adj./adv. to+v.太.而不能做某事 例：He is too young to go to school. 他年纪太小还不能上学。 2.adj./adv.+enough to +v.足够.而能做某事 例：He
2、 is old enough to go to school. 他足够大了能上学了/他已到了上学的年龄了。 3.so +adj./adv.+that从句 如此.以致 例：He is so old that he can go to school. 通常来说，这三种句型可用于同义句转换，具体如下： too.to. =not 反义词 enough to =so.that 否定句 例：He is too young to go to school. = He is not old enough to go to school. = He is so young that he cant go to
3、school.too to . ; not enough toStep 1 看图说话 利用课本P36页的图画和提示词练说 tooto do 和not enough to do 句子。如：1. The snake / dangerous/ hold . / The boy not braveThe snake is too dangerous to hold. The boy is not brave enough to hold it . 板书 tooto do 和not enough to do并让学生明确这两个短语的中文意思是 “太 而不能”。提醒学生观察这两个句子结构中的形容词用什么形式
4、，to do中的do 可否变换形式。在准确理解的基础上继续看图说话。2. The girl / short / get on the elephant. / she / not / tall .3. The elephant / heavy / carry. / The boy / not strong.4. The elephant / fat / go through the gate. / The gate / not wide.5. The monkey / far away / get the bananas. / The bananas / not near.6. The cat/
5、 slow/ catch the bird./ It / cannot run/ fast .Step 2 抛砖引玉 板书The snake is too dangerous to hold. The boy is not brave enough to hold it . (改为同义句)The snake is so dangerous that the boy _ hold it.学生在理解的基础上探求答案，在探求答案的过程中获得新知。板书 so that + 含有cant / couldnt do的否定句等同于tooto do; not enough to do 同步操练：1. The
6、girl is too short to get on the elephant. (改为同义句) The girl _ to get on the elephant. The girl _that she _ get on the elephant. The elephant is so tall_ that the girl cant get on it . The elephant _ enough _ the girl _ get on. The elephant _tall _ the girl _ get on.完成句子后求异：与原句比较后发现：由too to do 结构转换为no
7、t enough to do 结构时，要找到句中形容词的反义词。与比较后发现：so that + 含有cant / couldnt do的否定句结构的句子，若主从句的主语不一致时，改写为too to do 或not enough to do 结构时, 要在不定式to do前添for sb ，若主从句的主语一致，则不须添for sb。如： He is so young that he cant go to school. (改为同义句)He too young to go to school .He not old enough to go to school.观察 、 两句可得：在too to
8、 do 或not enough to do 的句子中，若to do 的宾语与句子的主语相一致时，须省略it。 发散思维：若把句子改为过去时，应该怎么办？1. The girl was too short to get on the elephant. (改为同义句)The elephant was so tall_ that the girl couldnt get on it .2. He ran very fast. He couldnt stop. He ran too fast to stop. He ran so fast that he couldnt stop. (方法是句型转换
9、时要注意时态一致。)Step 3 链接中考 The panda is so fat that it cant go through the hole.(改写为同一意思的句子)The hole _ such a fat panda to go through.The ice on the lake was so thin that people couldnt skate on it. (改写为同一意思的句子)The ice on the lake was not _ enough _ people _.Mr. King is very busy at work. He cant take a
10、holiday.(改为同义句)Mr. King is _ take a holiday.My grandfather is too old to travel around. (改为同义句)My grandfather is _ old _ he _ travel around any _.Step 4 巩固练习My brother was so clever that he could work out the problem. (改为同义句)My brother _ work out the problem.The box isnt light enough for him to carr
11、y. (改为同义句)The box _ for him _ carry.He is very short . He cant reach the book on the shelf.(合并为一句)He is _ reach the book on the shelf.The water was so dirty. We cant drink it. (改为同义句)The water was too _ .The water in this river is very dirty. Fishes cant live in it.The water in this river is _ that
12、fishes _ in it.My brother got up late yesterday. He was late for school.My brother got up _ thatPractice One :1. a. The box is so heavy that I cant carry it. b. The box is _ heavy_ _ _ carry. c. The box is not _ _ for me to carry.2. a. The maths problem isnt easy enough for me to work out. b. The ma
13、ths problem is _ difficult _ I cant work it out. c. The maths problem is _ difficult _ _ _ work out.3. a. The book is interesting enough foreverybody to read. b. The book is _ interesting_ everybody likes to readit. Practice Two:He is old enough to go to school. He is _ _ that _ _ go to school.2. Sh
14、e was so weak that she couldnt take care of her baby.She was _ weak _ take care of her baby.Practice Three:1She is so young that she cant go to school. She is _ _ _go to school.2The box is so heavy that he cant carry it. The box is_ _ _ _to carry3Xiao Lin is so old that he can go to school. Xiao Lin
15、 is _ _ _go to school.4The box is so light that he can carry it. The box is _ _ for him to carry.5The man is so old that he cant go to work. The man _ _ _to go to work.6The desk is so heavy that I cant move it. The desk _ _ _for me to move.7He is not old enough to do the work. He is _ _ to do the wo
16、rk.8The problem is too difficult for me to work out. The problem _ _ _for me to work out.Practice Four:1. The book is interesting enough for everybody to read.The book is _ interesting _ everybody likes to read it.2. The boy is so short that he cant reach the buttons of the lift.The boy is _ short _
17、 _ the buttons of the lift.The boy isnt _ _ _ _ the buttons of the lift.Too.to sothat enoughto 练习He is too young to go to school. 他太年幼了以至于不能上学。= He isnt old enough to go to school. 他的年纪还没有大到足以上学。= He is so young that he cant go to school. 他是如此的年幼，以至于他不能上学。1. He is old enough to go to school. He is _
18、 _ that _ _ go to school.2. She was so weak that she couldnt take care of her baby. She was _ weak _ take care of her baby. 一、sothat与tooto的转换 当that引导的从句为否定式且从句主语与主句的主语相同时，sothat可转换为tooto结构；若从句主语与主句的主语不相同时，sothat可转换为toofor sb to结构。例如： She is so young that she cant go to school. She is too young to go
19、 to school. The box is so heavy that he cant carry it. The box is too heavy for him to carry.二、sothat与enough to的转换 1. 当that引导的从句为肯定式时，若从句主语与主句主语相同时，sothat可转换为enough to结构；若从句主语与主句主语不相同时，sothat可转换为enough for sb to结构。例如： Xiao Lin is so old that he can go to school. Xiao Lin is old enough to go to schoo
20、l. The box is so light that he can carry it. The box is light enough for him to carry. 2. 当that引导的从句为否定式时，若从句主语与主句主语相同时，sothat可转换为enough to的否定结构；若从句主语与主句主语不相同时，sothat可转换为enough for sb to的否定结构。同时要注意，转换后的形容词（副词）要用其相应的反义词。例如： The man is so old that he cant go to work. The man isnt young enough to go to
21、 work. The desk is so heavy that I cant move it. The desk isnt light enough for me to move.三、enough to的句式为否定式时，enough to可以转换为tooto结构。但转换后的tooto结构中的形容词（副词）要用其相应的反义词。例如： He is not old enough to do the work. He is too young to do the work. The problem is too difficult for me to work out. The problem is
22、nt easy enough for me to work out.改写同义句，每空一词。 1. The book is interesting enough for everybody to read. The book is _ interesting _ everybody likes to read it. 2. The boy is so short that he cant reach the buttons of the lift. The boy is _ short _ _ the buttons of the lift. The boy isnt _ _ _ _ the b
23、uttons of the lift.八年级 so.that; .enough.;too.to专项练习1.He is old enough to go to school. He is _ _ that _ _ go to school.2. She was so weak that she couldnt take care of her baby. She was _ weak _ take care of her baby.3.She is so young that she cant go to school. She is _ _ _ go to school.4.The box i
24、s so heavy that he cant carry it. The box is _ _ for him_ carry.Xiao Lin is so old that he can go to school. Xiao Lin is _ _ _ go to school.6.The box is so light that he can carry it. The box is _ _ for him _ carry.7.The man is so old that he cant go to work. The man _ _ old _ go to work.8.The desk
25、is so heavy that I cant move it. The desk is _ _ for me _move.He is not old enough to do the work. He is _ _ _ do the work.10.The problem is too difficult for me to work out. The problem isnt _ _ _ _ to work out.11. The book is interesting enough for everybody to read. The book is _ _ _ everybody li
26、kes to read it.12. The boy is so short that he cant reach the buttons of the lift. The boy is _ _ _ _ the buttons of the lift. The boy isnt _ _ _ _ the buttons of the lift.13.The water was so dirty that we couldnt drink it The water was _ dirty for us _ drink14.The child is so young that he cant put
27、 on his clothes The child isnt _ _ _ put on his clothes 15.The problem is too difficult for me to work out The problem isnt _ _ _ for me to work out He is so young that he cant go to school He is _ young _ go to school 17.The box is so heavy that he cant lift it The box is _ heavy _ _ _ lift Tom is
28、so old that he can go to school Tom is _ _ to go to school 19. The box is so light that the child can lift itThe box is _ _ _ the child to liftsothat 、suchthat、so that的用法练习题一用so,such填空he was_excited that he couldnt get sleepthis teacher is_kind that we all like himhe ran_quickly that we all couldnt
29、catch up with himthis is_interesting a book that we all ebjoy reading itthey are_intereting books that we all enjoy reading themhe has_many books that I cant count themthis is_ an interesting book that we all enjoy reading itthere was _much food that we couldnt eat it allI have_little money that I c
30、annot afford a carhe is _a good student that we alll like him.he is _good a student that we alll like him.it was _bad weather that he had to stay at home.Ive had _many falls than im blick and blue all over二填空The little boy saved every coin_ _he could buy his mother a present on Mothers day .当球迷们看到贝克
31、汉姆的时候，他们如此激动以致于大喊大叫。(根据中文意思完成句子，每空一词。)(2003北京市海淀区)When the football fans saw Beckham, they got_excited_they cried out. David was so careless that he didnt find the mistakes in his test paper. (变为简单句)(2003福州市)David was_careless_find the mistakes in his test paper.A：The boy is so young that he cant lo
32、ok after himself.B：The boy is not_to look after himself.(改写句子，使B句与A句意思相近) . The stone is so heavy that I cant lift it up.It is_a heavy stone_I cant lift it up.(改写句子)The book is_ interesting_I want to read it againIt was_a fine day_we couldnt wait to go out for a walkJim is _clever_he can work out th
33、is difficult problem easilyMy cousin ran_fast _I couldnt catch up with himHe left in_a hurry_he forgot to close the windowThey are_lovely students_the teacher like them very muchMr Zhang is_good a teacher_all the students like himBob has_few friends_he often feels lonely三单项填空。She bought a digital ca
34、mera online she would save a lot of time. (2003扬州市)A.so that B.as soon as C.no matter D.such that ._fine day it is today! Yes,the sunshine is_beautiful that Id like to go swimming in the sea. (2003青岛市) A. How, such B. What a, very C. How, so D. What a, so The camera is _expensive_ I cant afford it.
35、(2004年辽宁省)A. so, that B. such, that C. so, as to D. enough, that . Miss Gao asked a question, but it was_that nobody could answer it.A.very difficult B. too difficult C. difficult enough D. so difficult To my surprise,he could get over _ difficult problems that he succeeded at last.A.so B.such-一用so,
36、such填空sososososuchsosuchsososuchsosuchso二填空so thatso，thattoo , toold enoughsuch, thatso.that.such.that.so.that.so.that.such.that.such.that.so.that.8.so.that. 三单项填空。AD DABso.that. 如此以致于.so that. 以便于，为了“so.that.”句型的意思是“如此/这么以致于”，常引导结果状语从句，但“so.that.”是个爱“变脸”句型，你一不留意就会出错。“so.that.”句型及其转换也是中考的热点，现将其用法总结归
37、纳如下，让我们一起来看看它是怎样变的吧。 一、 so. that.句型中的so是副词，常常用来修饰形容词或副词，常用句型为：主语+谓语+so+adj. / adv. + that从句。例如： 1. he is so young that she cant look after herself. 2. The boy ran so fast that I couldnt catch him. 3. He was so angry that he couldnt say a word. 二、 在“such. that.”句型中，such修饰名词，意思也是“如此以致于”但当名词前有many、much
38、、(a) few、(a) little等词修饰时，句子中要用“so.that.”而不能用“such.that.”。例如： 1. He has so much money that he can buy what he wanted. 2. Ive had so many falls that I have pains here and there. 3. There is little water in the glass that I cant drink any more. 三、 so与that也可连起来写，即变成：. so that .(以便 / 为了)，引导目的状语从句。例如： 1.
39、I got up early so that I could catch the early bus. 2. Please open the window so that we can breathe fresh air. 3. You must go now so that you wont be late. 四、以“so.that”引导的结果状语从句可以转换成不定式的简单句，即可转换为“.enough to.”或“.too.to”句型，但这种转换必须符合下列条件： 1. 当主句和从句的主语一致，且that从句是肯定句时，可用“enough to do sth.”来转换。如： The man
40、 is so strong that he can lift the heavy box. The man is strong enough to lift the heavy box. He was so clever that he can understand what I siad. He was clever enough to understand what I siad. 2. 当主句和从句的主语不一致，且that从句是肯定句时，可以用“enough for sb. to do sth.”来替换，但须注意不定式的宾语要省略。例如： The question is so easy
41、that I can work it out. The question is easy enough for me to work out. The box is so light that he can carry it. The box is light enough for him to carry. 3. 当主句和从句的主语一致，且that从句是否定句时，可以用“too.to”来替换。例如： The girl is so young that she cant dress herself. The girl is too young to dress herself. I was so tired that I couldnt go on with the wor