冀教版九年级英语全册Unit 1 Stay Healthy单元语法课件(共23张PPT)

(共23张PPT)
Unit 1 Stay Healthy
单元语法
need
情态动词
实义动词
need 的用法
need作情态动词
意为“必要”或“需要”，其后接动词原形，通常用于否定句或疑问句。
e.g. You needn’t worry.
你不必担心。
Need he write back so soon
他需要这么快回信吗？
—Need I answer the question
我需要回答这个问题吗？
—Yes, you must. / No, you needn’t.
是的，你必须回答。/ 不，你不需要。
—Mum, _____ I do my homework tonight
—No, you ______. But you must finish it before Sunday.
A. need; mustn’t B. must; needn’t
C. must; mustn’t D. mustn’t; needn’t
B
need作实义动词
need(s) sth./sb. 需要某物/ 某人
人＋need(s) to do sth. 某人需要做某事
物＋ need(s) doing=(物+need(s) to be done)
某物需要被……。
e.g. —Do you need anything to eat
你们需要吃点什么吗？
—No, thanks. We are not hungry.
不，谢谢。我们不饿。
The room needs cleaning.
=The room needs to be cleaned.
房间需要打扫了。
—Does he need _____ there at once
—No, he _____ leave so hurriedly because he has enough time.
A. to go; doesn’t need
B. go; needn’t
C. to go; needn’t
C
should 的用法
should作情态动词
后接动词原形，否定形式直接在should 后加not，意为“不应该”。
e.g. Students shouldn’t spend too much time playing computer games.
学生们不应该花太多时间玩电脑游戏。
—I’ve got a toothache, Mom.
—Oh, you ______ eat too much candy.
A. shouldn’t B. needn’t
C. should D. need
A
should 表示义务或责任，意为“应该”。
e.g. We should learn from each other.
我们应该相互学习。
To keep children away from danger during the coming summer holiday, parents ____ give them some safety tips.
should B. may
C. could D. might
A
should 表示建议或劝告，意为“应该”。
e.g. You should give up smoking.
你应该戒烟。
—Lily is intelligent and hardworking, so she _____ do well in the singing competition.
— Sure. She was born to be a singer.
A. should
B. might
C. can’t
A
语法专练
一、所给单词的正确形式填空。
1. Rose, you are so thin. You should ___________(eat) more, or you’ll make yourself ill.
2. He doesn’t need ___________ (go) to the farm with us.
3. The window needs ___________ (clean) every day.
eat
to go
cleaning /
to be cleaned
4. These years people in China needn’t ___________ (take) too much money when shopping because they often use Alipay or WeChat Pay.
5. When we are shopping online, should we ___________ (choose) wisely
take
choose
二、单项选择。
1. —I don’t care what people think.
—Well, you ______. Some opinions are worth weighing.
A. might B. should C. would D. could
B
2. —Must the children get up at six tomorrow morning
— No, they ______. Let them have a good sleep on weekends.
A. can’t B. needn’t
C. shouldn’t D. may not
B
3. For the sake of everyone’s health, we ______insist on wearing masks when going out during the epidemic.
A. can B. may C. should D. could
C
4. According to the traffic law, children under 12 ______ride bicycles on the road.
A. won’t B. wouldn’t
C. needn’t D. mustn’t
D
5. I walked here today, so this bike ______ be mine.
A. should B. mustn’t
C. can’t D. must
C
Bye-bye!