It-is--+形容词+enough-to-和too-……to的用法

一、enoughto的用法1.enough意思是“充分地，足够”，放在名词之前，形容词、副词之后。例：他跑得不够快。Hedidn’trunfastenough.没有足够的食物。Therearenotenoughfood.【拓展】enough也可以做名词，可以解释为“足够，充分”例：Ihaveeatenenough,Thankyou.我已经吃饱了，谢谢。2.我们可以用“形容词+enough+todo”的结构来描述一个人的品质和能力。例：Heistallenoughtoreachthetopofthefridge.他足够高可以够到冰箱顶上。Heisstrong.Hecanliftit.Heisstrongenoughtoliftit.他强壮地可以举起它。3.这个结构可以用so……that……(如此……以至于……）代替，that后面加从句Heissostrongthathecanliftit.他是如此强壮以至于可以把它举起来。4.还可以用“形容词+enoughforsb.todo”这个结构表示“……对某人来说足够……”例：这本书很容易，你能够看懂。Thebookiseasyenoughforyoutoread.练习：()1.Ihave____________totellyou.A.somethingenoughinterestingC.somethinginterestingenoughB.interestingsomethingenoughD.enoughsomethinginteresting()2.Heranandran,buthecouldn’trun_____________tocatchthebus.A.fastenoughB,enoughquicklyC.enoughfastD.enoughquickly()3.Mikeistwentyyearsold,heis_______________driveacar.A.oldenoughgoingtoC.enougholdtogotoB.oldenoughtogotoD.enougholdtogoing我的弟弟已经足够大去上学了。Mybrotheris___________________________togotoschool.我有足够的钱买这本书。Ihave___________________________________thisbook.改成同义句Heransofastsothathecaughtthetrain.Heran________________________catchthetrain.Heisverycleverandheoftenworkoutmanydifficultproblems.Heis________________________workoutmanydifficultproblems.二、too…to…的用法1.too…to…的意思是“太……而不能……”too后面是跟形容词或副词的，to是不定式的标志，后加动词原形。这个结构用在句子中意义上通常表示否定。例:Heistoopoortobuyanewcoat.他穷得买不起一件新衣服。2.还可以用“too+形容词+forsb.todo”这个结构表示“对某人来说太……而不能……”例：Theboxisheavy.Theboycan’tcarryit.=Theboxistooheavyfortheboytocarry.Thisstoryistoodifficultformetounderstand.这个故事太难，我不能理解。3.当too前面有否定词比如never,not,nothing等时，句子表示肯定。例：You’renevertoooldtolearn.活到老，学到老。4.too…to…可以和enoughtodo和so……that……转换too…to…和enoughtodo转换时，注意enough前面的形容词和too前面的形容词要互为反义词Sheistooyoungtodothework.=Sheisn’toldenoughtodothework.too…to…和so……that……转换时，that后面的句子要用否定句。Sheistooyoungtodothework.=Sheissoyoungthatshecan’tdothework.5.too还有太的意思toomany/much____________muchtoo_______________当too后面跟happy,glad,sad等表示感情的单词时too…to…表示肯定意义。Heistoosadtohearthebadnews.听到这个不好的消息他太悲伤了。练习()Ifeel__________tiredafterdoing____________work.A.muchtoo;muchtooC.toomany;toomuchB.muchtoo;toomuchD.muchtoo;toomany()Theoldmanis_________angry________sayaword.A.too;toB.to;tooC.to;tooD.to;to翻译句子这箱子太重我搬不动。（三种方式）Theboxis_________heavyforme____________________.Theboxis_________heavy_________I__________carry__________.Thebox__________light______________________me_______________________.这个房间太小了，五个人住不下。Theroomis________________________fivepeoplecan’t___________________________.Theroom_________big______________________fivepeople________________________.Theroomis________small_________fivepeople________________________________.