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1、一、 enough to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。He didnt run fast enough. 没有足够的食物。There are not enough food.【拓展】enough也可以做名词，可以解释为“足够，充分”例：I have eaten enough, Thank you. 我已经吃饱了，谢谢。2.我们可以用“形容词+enough +to do”的结构来描述一个人的品质和能力。例：He is tall enough to reach the top of the fridge. 他足够高可以够到冰箱顶上。
2、He is strong. He can lift it. He is strong enough to lift it. 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He is so strong that he can lift it. 他是如此强壮以至于可以把它举起来。4.还可以用“形容词+enough for sb. to do ”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。The book is easy enough for you to read. 练习：( ) 1.I have _ to tell you.A. s
3、omething enough interesting C.something interesting enoughB. interesting something enough D.enough something interesting( )2. He ran and ran, but he couldnt run _ to catch the bus.A. fast enough B,enough quickly C.enough fast D.enough quickly( )3. Mike is twenty years old, he is _ drive a car.A. old
4、 enough going to C.enough old to go toB. old enough to go to D.enough old to going我的弟弟已经足够大去上学了。My brother is _ _ _ to go to school.我有足够的钱买这本书。I have _ _ _ _ this book.改成同义句He ran so fast so that he caught the train.He ran _ _ _ catch the train.He is very clever and he often work out many difficult
5、problems.He is _ _ _ work out many difficult problems.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: He is too poor to buy a new coat. 他穷得买不起一件新衣服。2.还可以用“too+形容词 +for sb. to do ”这个结构表示“对某人来说太而不能”例：The box is heavy. The boy cant carry it. = The box is too heavy f
6、or the boy to carry.This story is too difficult for me to understand. 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：Youre never too old to learn. 活到老，学到老。4.too to可以和enough to do和 so that 转换too to 和enough to do 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She is too young to do the work .= She isnt
7、 old enough to do the work.too to 和 so that转换时，that 后面的句子要用否定句。She is too young to do the work. = She is so young that she cant do the work.5. too还有太的意思too many /much _ much too _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。He is too sad to hear the bad news. 听到这个不好的消息他太悲伤了。练习( ) I feel _ tired af
8、ter doing _ work.A. much too; much too C.too many; too muchB. much too; too much D.much too; too many( ) The old man is _ angry _ say a word. A.too; to B.to; too C.to; too D.to; to翻译句子这箱子太重我搬不动。（三种方式）The box is _ heavy for me _ _.The box is _ heavy _ I _ carry _.The box _ light _ _ me _ _.这个房间太小了，五个人住不下。The room is _ _ _ five people cant _ _ _.The room _ big _ _ five people _ _ _.The room is _ small _ five people _ _ _.
