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Unit 5 Good manners单元语法专练enoughto的用法1.“be+adj.+enough+to do” 结构常用来描述一个人的品质或能力。该结构可以与so.that.句型互换。例如:He is strong enough to carry the heavy stone.=He is so strong that he can carry the heavy stone.他够强壮,以至于能搬起这块很重的石头。2.enough在句中可以作状语、定语和表语。例如:The house is not big enough for us.这房子对我们来说不够大。(作状语)Have you got enough money?你有足够的钱吗?(作定语)Six bottles should be enough.六瓶应该够了。(作表语)too.to的用法1.too.to意为“太而不能”,该结构表示具有否定意义的结果,否定意义是从too(太,过于)开始的。too后接形容词或副词表示否定的原因,后面的“to+动词原形”表示否定的内容。例如:Thegirlistootiredtowalk.这个女孩太累了,走不动了。2.too.to结构以肯定的形式表达了否定的意义,以简单句的结构表达了复合句的内容,这个结构可转换为so.that.句型,也可以用反义的形容词转换为enough to结构。例如:Theroomistoosmalltoholdsomanypeople.Theroomissosmallthatitcantholdsomanypeople.Theroomisntbigenoughtoholdsomanypeople.这个房间太小了,容纳不下这么多人。3.too.to结构中,too后的形容词若修饰单数可数名词,需要加不定冠词a/an,放在形容词之后,名词之前。例如:Thatstoosmallabagtoholdallthesebooks.那个书包太小了,装不下所有这些书。4.too.to结构中不定式前可加逻辑主语,表示动作的执行者,常由for引出。例如:TheMathsproblemistoohardforthemtoworkout.这个数学题太难了,他们算不出来。5.too.to结构和否定词never或not一起使用时,并不表示否定意义。例如:Oneisnevertoooldtolearn.活到老,学到老。.单项填空(B)1.He atejust now.He isand cant eat any more.A.enough food;enough fullB.enough food;full enoughC.food enough;full enoughD.food enough;enough full(A)2.The young man iscarry that heavy bag.A.strong enough toB.enough strong toC.not strong enoughD.strong enough(D)3.Mum,can I help you with the cleaning?Thank you,dear.But you arenow.You must wait till you are.A.too young;too oldB.too young;enough oldC.so young;enough oldD.too young;old enough(B)4.How do you like the film KungFuPanda3?It isexcitingId like to see it again.A.such;thatB.so;thatC.enough;toD.too;to(A)5.You should be confident enougha speech in front of many people.A.to makeB.madeC.makingD.make.同义句转换,每空一词1.Daniel is so kind that he always helps his friends in need.Daniel iskindenoughtohelphis friends in need.2.The girl was so lucky that she got Jay Chous signature.The girl wasluckyenoughtogetJay Chous signature.3.The box is so heavy that I cant carry it.The box istooheavyformetocarry.4.Simons grandfather is too old to drive a car.Simons grandfather issooldthat he cant drive a car.5.Suzy was so young that she couldnt understand such a thing.Suzy wastooyoungtounderstand such a thing.
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