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Unit 5 Good manners
Grammar
知识点：
1. enough to的用法
我们可以用“be动词+adj. +enough+to +do”来描述某人的品质和能力，意为“…足够…做某事”，可以与“so+adj.+that…”句型转换。
（注意：实义动词+ adv.（副词） + enough + to do sth.）
enough可以作状语、定语和表语。
The house is not big enough for us. (状语)
Have you got enough money (定语)
Six bottles should be enough. (表语)
2. too…to的用法
（1）我们可以用“be动词+too+adj.+to do”来表达一个否定的结果，意为“太...而不能...”。
（2）too…to…结构可与so …that…not…句型进行转换
（3）too…to…结构也可转换为enough to结构，通常enough to结构中使用的形容词是too…to…结构中使用的形容词的反义词,“too + adj. + to do = be + not + adj. + enough + to
do”。
（4）too…to…结构中我们可以在动词不定式前加介词for引出逻辑主语。
（注意：实义动词+ too + adv.（副词）(for sb.) + to do sth.）
同步练习
一、根据句意及中文提示、英文解释或通过上下文，写出句子所缺单词
1. My mum gives me a_______(吻) every morning when I leave for school.
2. If you_______(撞击) into someone, you should say “sorry”.
3. You had better speak_______(in a high voice level) when you give a speech.
4. He is a polite boy. He often_______(to say hello to) people he knows at school.
5. -How long has the park been open to the_______
-For about ten years.
答案：1. kiss 2. bump 3. loudly 4. greets 5. public
二、选择所给单词的适当形式填空
loud, one, polite, luck, start
1. It’s my_______time to give a talk in front of so many people.
2. You should speak to the old_______.
3. She told me that 23 is her_______number.
4. He_______writing a letter to his parents ten minutes ago.
5. Please speak_______. I can’t hear you.
答案：1. first 2. politely 3. lucky 4. started 5. loudly
三、用所给动词的适当形式填空
1. My brothers_______(discuss) a Maths problem with Cindy when I arrived home.
2. Amy, _______(keep) your voice down in the library. Everyone is studying.
3. I can’t take a walk with you. I’m too busy_______(clean) the house now.
4. -Whose boat_______(sail) over there on the sea far away
-The fishermen’s.
5. I am so sorry to keep you_______(wait) for such a long time.
答案：1. were discussing 2. keep 3. cleaning 4. is sailing 5. waiting
四、单项选择
( ) 1. The speaker showed some_______examples to make the science report easy to understand.
A. awful B. stupid C. proper D. thick
( ) 2. Don't talk_______. Your grandmother is sleeping now.
A. badly B. hardly C. loudly D. hard
( ) 3. There’s no doubt the Belt and Road Initiative will successfully_______the cooperation between China and other countries along the line.
A. push forward B. care for C. look for D. hope for
( ) 4. During our holidays, we should avoid_______up at night and oversleeping in the morning.
A. stay B. to stay C. stayed D. staying
( ) 5. -_______, where’s the meeting room
-This way, please. I will show you there.
A. Excuse me B. That’s all right
C. Sorry D. It doesn’t matter
答案：1-5 CCADA
五、完成句子
1. 小声地，因为小朋友们睡着了。
________________________as the children have fallen asleep.
2. 大人说话时，小孩应该避免插嘴。
Children should____________________while the adults are talking.
3. 在电影院排队时，我偶然遇见了我的一位老同学。
I met____________________________in the cinema.
4. 疫情期间，人们喜欢用点头代替握手。
People like_______________________with each other during the epidemic.
5. 用恰当的方式开始谈话是明智的。
It’s wise_____________________________.
6. 自从来到法国后，你习惯用亲吻的方式和朋友打招呼了吗？
Have you been used to_____________________since you came to France
答案：1. Keep your voice down 2. avoid cutting in(on them)
3. an old classmate of mine by accident when queuing for my turn
4. to start a conversation in a proper way 5. greeting friends with a kiss
6. to avoid bad manners like pushing/cutting in before others in public

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