(完整版)too...to...-与-enough...to...-与-so...that...的区别

1、too.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 +vJ£ 够.而能做某事例：He 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 如止匕以致例： 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：tooto=n

2、ot 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 can't go to school.too to .；not enough to Step 1看图说话 利用课本P36页的图画和提示词练说 too to do和notenough to do句子。如：1. The snake / dangerous/ hold . / The boy not braveThe snake is too

3、 dangerous to hold. The boy is not brave enough to hold it .板书too to do和notenough 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，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 elephan

4、t / fat / go through the gate. / The gate / not wide.5. The monkey / far away / get the bananas. / The bananas / not near.6. The cat/ 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

5、 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 can' t / couldnU俅d定句等同于 too - to do ；not - enough to do同步操练：1. The 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 can

6、t 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tooto do 结构转换为notenough to do吉构时，要找到句中形容词的反义词。与比较后发现：sothat +含有can' t / couldn '白锦8定句结构的句子，若主从句的主语不一致时，改写为 tooto do或notenough 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 y

7、oung that he can ' t go to?SChoO（句）He too young to go to school .He not old enough to go to school.观察、 两句可得：在tooto do 或notenough 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 couldn t get

8、on it .2. He ran very fast. He couldn t stop.He ran too fast to stop.He ran so fast thathe couldn ' t stop.法是句型转换时要注意时态一致。）Step 3 链接中考The panda is so fat that it can' t go throughthe hole思的句子）The hole such a fat panda to go through.The ice on the lake was so thin that people couldn. （改写为同一意思

9、的句子 t skate on it ）The ice on the lake was not enough people .Mr. King is very busy at work. He can' t takeaWojday.（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

10、the problem. 改为同义句 （）My brother work out the problem.The box isn t lighotuegnh for him to carry. （改为同义句）The box for him carry.He is very short . He can ' t reach the book ontheshefj（）He is reach the book on the shelf.The water was so dirty. We can （改为同义句 t drink it. ）The water was too .The water

11、 in this river is very dirty. Fishes can t live in it.The water in this river is that 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 can't carry it.b. The box is heavycarry.c. The box is not for me to car

12、ry.2. a. The maths problem isn't easy enough for me to work out.b. The maths problem is difficult I can't work it out.c. The maths problem is difficult work out.3. a. The book is interesting enough for everybody to read.b. The book is interestingeverybody likes to read it.Practice Two:He is

13、old enough to go to school.He is that go to school.2. She was so weak that she couldn t take care of her baby.She was weak take care of her baby.Practice Three:1 She is so young that she can t go to school.=She is go to school.2 The box is so heavy that he can t carry it.=The box isto carry3 Xiao Li

14、n is so old that he can go to school.=Xiao Lin is go to school.4 The box is so light that he can carry it.=The box is for him to carry.5 The man is so old that he can t go to work.=The man to go to work.6 The desk is so heavy that I can t move it.=The desk for me to move.7 He is not old enough to do

15、 the work.=He is to do the work.8 The 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 can he bu ttot nresaocfhthte lift

16、.The boy is short the buttons of the lift.The boy isn t the buttons of the lift.Too.to so - that enough to练习He is too young to go to school. 他太年幼了以至于不能上学。= He isn't 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 can't 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

17、 to school.He is that go to school.2. She was so weak that she couldn t take care of her baby.She was weak take care of her baby.一、sothat与too心的转换当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too - to 结构；若从句主语与主句的主语不相同时，sorhat可转换为too - for sb to结构。例如：She is so young that she can ' t go to=sChe(osi too y

18、oung to go to school.The box is so heavy that he can ' t=cTihry bo x 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 t

19、o go to school.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 can ' t go4olWerkian isn ' t yo

20、ung enough to go to work.The desk is so heavy that I cant mTohveediet.sk isnt light enough for me to move.8三、enough to的句式为否定式时，enough to可以转换为tooro结构。但转换后的too to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 ou

21、t. = The problem isn ' t easy enough for me t( 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 can t reach the buttons of the lift.The boy is short the buttons of the lift.The boy isn _t

22、 the buttons of the lift./I年级 so.that; .enough.;too.t比项练习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 can t go to school.She is go to school.4 .The box is so heavy th

23、at he can t carry it.The box is for himcarry.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 can t go to work.The man old go to work.8 .The desk is so heavy that I can t move it.The

24、 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 isn t to work out.11 . The book is interesting enough for everybody to read.The book is everybody likes to read it.12 . The boy is so short that he can t reaocf

25、hthtehelifbt.uttonsThe boy is the buttons of the lift.The boy isn t the buttons of the lift.13 .The water was so dirty that we couldn't drink itThe water was dirty for us drink14 .The child is so young that he can't put on his clothe sThe child isn't put on his clothe s15 .The problem is

26、 too difficult for me to work outThe problem isn't for me to work outHe is so young that he can't go to schoo lHe is young go to schoo l17.The box is so heavy that he can't lift itThe box is heavy liftTom is so old that he can go to schoo lTom is to go to schoo l19. The box is so light t

27、hat 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 wasexcited that he couldn't get sleepthis teacher iskind that we all like himhe ranquickly that we all couldn't catch up with himthis isinteresting a book that we all ebjoy reading itthey areinte

28、reting books that we all enjoy reading themhe hasmany books that I can't count themthis isan interesting book that we all enjoy reading itthere was much food that we couldn't eat it allI have_little money that I cannot afford a car he is a good student that we alll like him.he is good a stud

29、ent that we alll like him.it was bad weather that he had to stay at home.I've had many falls than i'm blick and blue all over二填空The little boy saved every coinhecould buy his mother a present onMother's day .当球迷们看到贝克汉姆的时候，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 fan

30、s saw Beckham, they gotexcitedthey cried out.David was so careless that he didn't find the mistakes in his test paper.变为简单句）（2003 福 州市 ）David wascarelessfind the mistakes in his test paper.A ： The boy is so young that he can't look after himself.B ： The boy is not to look after himself.改写句子，

31、使B句与A句意思相近） . The stone is so heavy that I can't lift it up.It is a heavy stone I can't lift it up.改写句子）The book isinterestingI want to read it againIt wasa fine daywe couldn't wait to go out for a walkJim is cleverhe can work out this difficult problem easilyMy cousin ranfast I couldn&#

32、39;t catch up with himHe left ina hurryhe forgot to close the windowThey arelovely studentsthe teacher like them very muchMr Zhang isgood a teacherall the students like himBob hasfew friendshe often feels lonely三单项填空。She bought a digital camera online she would save a lot of time. （200扬州市3）A.so that

33、 B.as soon as C.no matter D.such that. _fine day it is today! Yes,the sunshine is_beautiful that I'd like to go swimming in the sea. （2003青岛市）A. How, such B. What a, very C. How, so D. What a, soThe camera is expensive_ I can't afford it. （2004年辽宁省）A. so, that B. such, that C. so, as to D. e

34、nough, that. Miss Gao asked a question, but it wasthat nobody could answer it.A.very difficult B. too difficult C. difficult enough D. so difficultTo my surprise,he could get over difficult problems that he succeeded at last.A.soB.such.用 so,such填空 8.so.that三单项填空。soAsoDsoDsuchAsoB suchsososuchsosuchs

35、o二填空so thatso， thattoo , toold enoughsuch, thatso.that. such.that.so.that.so.that. .such.that. .such.that. .so.that.50.1. that 如止匕以致于.so that.以便于，为了“so.that.句型时意 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

36、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 can't look after herself.2. The boy ran so fast that I couldn't catch him.3. He was so angry that he couldn't 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、 (a) few、 (a) little 等词修饰时，句子中要用“ so.

37、that.而不能用.”“ such.that.。例如：.”1. He has so much money that he can buy what he wanted.2. I've had so many falls that I have pains here and there.3. There is little water in the glass that I can't 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. I got up early so that I could

38、 catch the early bus.2. Please open the window so that we can breathe fresh air.3. You must go now so that you won't be late.四、以“so.thatl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".enoughto.或” .too.t画型，但这种转换必须符合下歹！J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 st俅车换。如：The man is so strong that he can

39、 lift the heavy box.7The man is strong enough to lift the heavy box.He was so clever that he can understand what I siad.7He 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 that I can work it out.7The q

40、uestion is easy enough for me to work out.The box is so light that he can carry it.7The 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.t沫替换。例如：The girl is so young that she can't dress herself.7The girl is too young to dress herself.I was so tired that I couldn't go

41、 on with the work.7I was too tired to go on with the work.4 . 当主句和从句的主语不一致，且that 从句是否定时，如果要用“ too.to.替换”“so.that.,则用介tfor引出动词不定式的逻辑主语，可以用“toofor sb. to do st俅替换，注意不定式的宾语要省略。The bag is so heavy that she can't move it.7The bag is too heavy for her to move.It is so hot that we can't sleep.7It i

42、s too hot for us to sleep. too to ,enough to sothat 的句型转换 too - to 太 以致于 enoughto!L够sothat如此 以致于 so that - so面既可以跟形容词也可以跟副词，that后跟结果状语从句，常与情态动词 can 连用。例如： The boy is so strong that he can carry the heavy suitcase .The weather is so sunny that we can go hiking .The bus is running so fast that everyon

43、e will fly .My mother is so beautiful that we all like her .enough to:enough既可以修饰名词也可以修饰形容词和副词，但是修饰名词时既可以放 在名词之前也可以放在名词之后，而修饰形容词和副词必须放在他们之后。例如： The tree is short enough for us to climb .I have enough time to finish our work .The pretty girl does her homework carefully enough to get her teacher s如果主语

44、是物的，可以在to 之前加 for somebody 。too心to!表否定，与enough to相同的是如果物体作主语，在 to的前面加for somebody 。例如： The children are too smart to scold so much .We are too small to reach the apples .The speaker said too fast for them to hear clearly .练习题：They are so happy that they forget the time .（用 too to 本口 enoughto 互换）We a

45、re old enough to dress ourselves .（用 too to 和 sothat 互换）The problem is so difficult that nobody can work it out （用 too to 禾口 enoughto 互换）These oranges are so delicious that the visitors can （用 too to'和 wno ugh to 互换）The sweater is too small for my sister to wear.（用 enough- - to 和 sothat 互换）Too to专练：一、变换下列句型：1. The boy is so young that he can't look after himself. The boy is young after himself.2. a. The box is so heavy that I can't carry it.b. The box is h