Welcome to the unit Reading Vocabulary Grammar
需要掌握的词汇
pet, parrot, rabbit, hold, feed, carrot, chase, wide, hunt, hide, trick, build, camp, stick, bite, end, trouble, anywhere, middle, open, drawer, empty, care, ring, doorbell, feather, wing, knock, cage, pull, brush, frighten, once, clean
重点难点详解
1. 名词复数的不规则变化
名词单数与复数同形。如：fish deer（鹿） sheep
只有复数形式，没有单数形式的名词。如：clothes people trousers
不规则变化的名词复数形式。如：mouse-mice child-children
以o 结尾的名词有的加s 有的加es 。如：tomato-tomatoes potato-potatoes mango-mangoes mosquito-mosquitoes radio-radios piano-pianos photo-photos kilo--kilos
以oo结尾的加s zoo-zoos kangaroo-kangaroos
2. 情态动词 should , ought to , must
should “应该” 否定式为should not/shouldn’t， 疑问句形式是将 should移至主语之前。如：
You should look after yourself.
He shouldn’t be so careless.
What should we do ?
ought to “应该” 意思与should 相近，ought to 着重客观的情况，语气比should强， 带有责备或督促的意思，否定式为ought not to， 疑问句形式是将ought 移至主语之前；should侧重自己主观的看法，表示义务、责任。如：
We ought to go and see Kate sometime next week.
Ought we to answer the question now?
You ought not to smoke so much.
Must“必须”否定式为mustn’t，表示禁止，疑问句形式是将must移至主语之前，其否定回答常用needn’t或don’t have to，表示“不必”，“无须”。must还可以表示非常肯定的猜测，只用于肯定句中。如：
I must study hard and catch up with my classmates.
---Must we finish the work at once?
---No, you needn’t.
You must be very tired.
3. 祈使句 表示命令、请求或指示的句子叫祈使句， 谓语动词用原形，省略主语you。祈使句的 否定结构是在肯定结构前加don’t。如：
Sit on the chair, please.
Don’t read in the sun, Tom.
Be quiet! Mum is sleeping.
Don’t be late again next time.
Let’s not go fishing.
Do come early tomorrow. （加助动词do 用来加强语气。）
4. chase =run after v. n. 追赶，追逐
Look, the cat is chasing the mouse.
Chase the chickens out of the garden.
After a long chase, they caught the robbers.
5. catch v.抓住，赶上，染上（疾病）
The early bird catches the worm.
We wanted to catch the early train, but failed.
Put on more clothes , or you may catch cold.
6. hunt v. 搜寻，打猎，可与for, out, up等介词、副词连用。
I’m hungry. Let’s hunt for something to eat.
You ought to hunt up the word in the dictionary.
Did he go hunting with you?
7. build…（out ） of… 用……建造的
People there built their houses out of stone.
The bridge is built of wood.
8. trouble n.麻烦的人或事 v. 麻烦
What’s your trouble?
Don’t laugh at those in trouble.
I’m sorry to trouble you.
9. care v. 介意，在意
They might fail, but they didn’t care.
He didn’t care about all this.
10. There is something wrong with ……. ……出毛病，有问题。
=Something is wrong with……
There is something wrong with my watch.
Is there anything wrong with the camera?
11. It’s + n./adj. + to do something
It’s a good idea to clean the fish tank today.
Is it necessary to learn more about how to look after the dog?
It’s very important not to give the goldfish too much food.
【典型例题】
1. _______ goldfish _______ is bad for it.
A. Feed, much too B. Feeding, much too
C. Feed, too much D. Feeding, too much
2. ---What’s wrong with you? ---I feel ________. I heard a _______ noise just now.
A. frightening, frightened B. frightening, frightening
C. frightened, frightening D. frightened, frightened
3. You should keep ______ in the library.
A. quite B. quiet C. quietly D. be quite
4. Tim plays with his pet for _______ every day.
A. some time B. sometimes C. sometime D. some times
5. It’s necessary for us _______ with them every day.
A. walking B. walk C. walks D. to walk
答案：1. D 2. B 3. B 4. A 5. D
【模拟试题】（答题时间：20分钟）
一、词组翻译
1. 向某人问好
2. 应该更礼貌
3. 彩色的羽毛
4. 最聪明的动物
5. 四处寻找他的兔子
6. 追赶猴子
7. 敲门
8. 黑白相间的爪子
9. 忙于工作
10. 全世界
11. 照看鹦鹉的正确方法
12. 有足够的时间
二、改写句子
1. You mustn’t speak to the old like that.（改为祈使句）
______ ______ to the old like that.
2. I like fruit best.（ 改为同义句）
Fruit is ______ ______.
3. I think the rain will stop tonight.（改为否定句）
I _____ _____ the rain _____ stop tonight.
4. What a kind girl! （改为同义句）
______ ______ the girl is!
5. Must we take good care of the little sheep?（作否定回答）
No, ______ ______.
三、完成句子
1. 我们每周至少应该喂它两次蔬菜。
We ______ ________ ______ _______ ________ _______ _______ a week.
2. 不要再粗心了。
Don’t_______ _______ _______ _________.
3. 你们不应该嘲笑别人。
You ______ ______ ______ laugh at others.
4. 他是所有人中最矮的。
He is _______ _______ _______ _______.
5. 保持健康很重要。
It’s _______ ______ _______ _______.
【试题答案】
一、1. say hello to sb.
2. ought to be more polite
3. colourful feathers
4. the cleverest animal
5. look around for his rabbit
6. run after the monkey
7. knock on the door
8. white and black paws
9. be busy at work
10. all over the world
11. the right way to look after the parrot
12. have enough time
二、1. Don’t speak 2. my favourite 3. don’t think, will 4. How kind 5. you needn’t
三、1. should feed it vegetables at least twice
2. be careless any more
3. ought not to
4. the shortest of all
5. important to keep healthy