内容正文:
Unit 2
Topic 2
八上
1.疲劳的
2.必要的
3.没有,缺乏
4.吸烟;烟
5.引起;原因
6.强迫
7.尝,吃;品味
8.甚至
9.事实
10.可能
tired
necessary
without
smoke
cause
force
taste
even
fact
possible
Ⅰ.单词复习
1. act
2. tomato
3. potato
4. ill
5. healthy
unhealthy
potatoes (pl.)
illness
tomatoes (pl.)
active
7. necessary
unnecessary
8. smoke
6. possible
impossible
smoker
activity
Ⅱ.词性变化
3
[ˈbɪskɪt]
['lɪtə]
[wɪ'ðaʊt]
[ˈɑːtɪk(ə)l]
['nesəˌsəri]
['ʃʊgə]
['taɪəd]
['ʃaʊə]
[sɔːlt]
['æktɪv]
biscuit
litter
without
article
necessary
sugar
tired
shower
salt
active
Ⅲ.音标复习
1.事实上、实际上
2.对……有害
3.熬夜
4.放弃做某事
5.尽量……地
6.保持健康
7.在不同的方面
8.保持空气清新
9.饭前
10.引起癌症
in fact
2. be bad for...
3. stay up
4. give up doing sth.
5. as ... as possible
6. keep healthy
7. in different ways
8. keep the air fresh
9. before meals
10. cause cancer
Ⅴ.词组
Ⅳ.语法
must/mustn’t 的用法
1. 人人必须遵守交通规则。
Everyone _______ _______ the traffic rules.
2. 你上课不要再迟到了。
You ________ _____ _______ _______ school again.
3. 我必须叫他戒烟。
I _____ _____ him _____ _____ _____ _________.
4. 你不要乱丢垃圾。
You _______ _______ litter _______.
5. — _________ I go to the teachers' office now?
—No, you __________.
A. Mustn’t, mustn’t B. May, needn’t
C. Must, don’t have to
must obey
mustn’t be late for
must ask
to give up smoking
mustn’t throw
around
总结:情态动词must及其否定形式 mustn’t=must not.
(1)must 意为“必须做……”,其否定意义为 “不
必做……”,用____________ 或_________.
e.g. —Must I finish it tonight?
—No, you don’t have to. 。
(2)而mustn’t 意为_____________.
e.g. You must not throw litter about.
别到处乱扔垃圾。
(3)must与have to都表示“必须”时的区别
must 表示说话人主观上的看法,即主观上的必要。
e.g. He said that he must work hard.
have to 表示客观的需要,有人称、数、时态的变化。
e.g. He had to look after his sister yesterday.
must/mustn’t 的用法
don’t have to
needn’t
禁止做……
Ⅳ.语法
may的用法
— Do you have any plans for this weekend?
— I’m not sure. I _____