(完整word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 +v足.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.

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

3、 snake is too dangerous to hold. The boy is not brave enough to hold it .板书 tooto 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 s

4、trong.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/ 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 ) T

5、he 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 / couldn 的t否do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

6、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 tooto do 结构转换为 notenough to do结构时，要找到句1中形容词的反义词。与比较后发现： sothat + 含有 cant / couldn的t否do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

7、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改school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 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

8、 elephant was so tall_ that the girl couldn t get 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方.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 through改写为the同一hole意.思(的句子 )The hole _ such a fat panda to go through.The ice on

9、 the lake was so thin that people couldn. (改写为t同skate一意on思的it句子 )The ice on the lake was not _ enough _ people _.Mr. King is very busy at work. He can t take改为a同holiday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 a

10、ny _.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 isn t lightoughen for him to carry. (改为同义句 )The box _ for him _ carry.He is very short . He can t reach the book on合the并为shelf一句.( )He is _ reach the book on the shelf.The w

11、ater was so dirty. We can(改t为drink同义it.句 )The water was too _ .The water 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 :21. a. The box is so heavy tha

12、t I can't carry it.b. The box is _ heavy_ _ _ carry.c. The box is not _ _ for me to carry.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 interestin

13、g enough for everybody to read.b. The book is _ interesting_ everybody likes to read it. Practice Two:He is 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:1She is so young tha

14、t 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 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 can

15、t 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 work.8The problem is too difficult for me to work out. The problem _ _ _for me to work out. Practice Four:1. The book is interest

16、ing enough for everybody to read. The book is _ interesting _ everybody likes to read it.2. The boy is so short that he canhe buttonsreachofthe lift.The boy is _ short _ _ the buttons of the lift.The boy isn t _ _ _ _ the buttons of the lift.Too.tosothatenoughto 练习3He is too young to go to school. 他

17、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 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.

18、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， so that可转换为 too to 结构；若从句主语与主句的主语不相同时， so that 可转换为 too for sb to结构。例如：She is so young that she cant go toscSheoolis. too young to go to school.The box is so heavy that he cantcarryThe boxit. is too heavy for him to carry.二、 sothat 与 enough to的转换1.

19、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 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

20、主句主语相同时， so that 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， so that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 gotoTheworkman. isn t young enough to go to work.The desk is so heavy that I cantmoveThedeskit. isnt light enough for me to move.三、enough to的句式为否定式时，

21、enough to可以转换为 too to 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 out. The problem isn t 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

22、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 buttons 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 sc

23、hool.2. She was so weak that she couldn t take care of her baby.4She 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 that he can t carry it.The box is _ _ for him_ carry.Xiao Lin is so old that he can go to school.Xiao

24、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 desk is _ _ for me _move.He is not old enough to do the work.He is _ _ _ do th

25、e 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 likes to read it.12. The boy is so short that he can t reachofthetheliftbuttons.The boy is _ _ _ _ the buttons of the li

26、ft.The boy isnt _ _ _ _ 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 clothesThe child isn't _ _ _ put on his clothes15.The problem is too difficult for me to work out The p

27、roblem isn't _ _ _ for me to work outHe is so young that he can't go to schoolHe is _ young _ go to school17.The box is so heavy that he can't lift itThe box is _ heavy _ _ _ liftTom is so old that he can go to schoolTom is _ _ to go to school19. The box is so light that the child can li

28、ft itThe box is _ _ _ the child to liftsothat 、suchthat、so that 的用法练习题5一用 so,such填空he was_excited that he couldn't get sleepthis teacher is_kind that we all like himhe ran_quickly that we all couldn't catch up with himthis is_interesting a book that we all ebjoy reading itthey are_intereting

29、 books that we all enjoy reading themhe has_many books that I can't count themthis is_ an 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 carhe is _a good student that we alll like him.he is _good a stude

30、nt 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 coin_ _he could 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 foot

31、ball fans saw Beckham, they got_excited_they 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 was_careless_find 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 h

32、imself.(改写句子，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 is_ interesting_I want to read it againIt was_a fine day_we couldn't wait to go out for a walkJim is _clever_he can work out this difficult problem easilyMy

33、 cousin ran_fast _I couldn't catch up with himHe left in_a hurry_he forgot toclose 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 camera online she would sav

34、e a lot of time. (2003扬州市 )6A.so thatB.as soon asC.no matterD.such that._fine day it is today! Yes,the sunshine is_beautiful that I'd like to go swimming in thesea. (2003青岛市 )A. How, suchB. What a, veryC. How, soD. What a, soThe camera is _expensive_ I can't afford it. (2004年辽宁省 )A. so, that

35、B. such, thatC. so, as toD. enough, that. Miss Gao asked a question, but it was_that nobody could answer it.A.very difficultB. too difficultC. difficult enoughD. so difficultTo my surprise,he could get over _ difficult problems that he succeeded at last.A.soB.such一用 so,such填空8.so.that.so三单项填空。soAsoD

36、soDsuchAsoBsuchsososuchsosuchso二填空so thatso，thattoo , toold enoughsuch, thatso.that.such.that.so.that.so.that.such.that.such.that.so.that.7so.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，现将其用法总结归纳如下，让我们一起来看看它是怎样

37、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 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

38、、 much、 (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. 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 /

39、 为了 )，引导目的状语从句。例如：1. 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 won't 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“.enoughto. 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 “eno

40、ugh to do sth来.转换”。如：The man 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

41、：The question is so easy 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 can't dress herself.The girl is too youn

42、g to dress herself.I was so tired that I couldn't go on with the work.I 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 ”8“ so.that.，则用介”词 for 引出动词不定式的逻辑主语，可以用 “ too.for sb. to do sth来.替换，注意不定式的宾语要省略。The bag is so heavy that she can't move it.The bag is too h

43、eavy for her to move.It is so hot that we can't sleep.It is too hot for us to sleep.tooto ,enough 及to sothat 的句型转换tooto 太 以致于enoughto足够sothat 如此以致于so that so后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

44、 can go hiking .The bus is running so fast that everyone will fly .My mother is so beautiful that we all like her .enoughto :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

45、 her homework carefully enough to get her teachers如果主语是物的，可以在to 之前加 for somebody 。toototo是表否定，与 enoughto 相同的是如果物体作主语，在to 的前面加 forsomebody 。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

46、that they forget the time（.用 tooto 和 enoughto 互换）We are old enough to dress ourselves （.用 tooto 和 sothat互 换 ）The problem is so difficult that nobody can work it out（用 tooto 和 enoughto 互换）These oranges are so delicious that the visitors can（用 tooto 和t waitenough.to 互 换）The sweater is too small for my sister to wear （.用 enoughto 和 sothat互 换）Tooto 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.9b. The box is _ heavy_ _ _ carry.c. The box is not _ _ for me to carry.3. a. The maths p