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1137920011252200Unit2 Topic 3
Section A
1.go ahead请吧，开始吧，走在前面
2.build sb. up增强某人的体质，使...强壮3.all the time总是，一直
4.由must（必须、一定要）开头的问句, 否定时不用mustn’t 来回答，而应用needn’t 或don’t have to来回答。
—Must we keep the windows open all the time?
—Yes, we must. —No,we don’t have to./No,we needn’t.
must必须，一定，侧重于个人意志和主观上的，只有一种形式，构成must do sth.;
have to必须，不得不，侧重于客观上的，可用于各种时态。
I know I must study hard.我知道我必须努力学习。
My grandma was ill,so I had to call the doctor.我的奶奶病了,所以我不得不叫医生。
Section B
be afraid +句子：恐怕...
I am afraid they have no time to play basketball.恐怕他们没时间打篮球了。
ring sb. up=ring up sb.给某人打电话，ring还可用call替代
在打电话时, 介绍自己时不说I’m . . ., 应该用This is . . . 。
3.leave a message 留口信give（sb.）a message（给某人）捎口信
take a message to sb.=give a message to sb.给某人传口信
tell sb.to do sth.告诉某人做某事tell sb. not to do sth.告诉某人不要做某事
The teacher tells us to clean the classroom.老师告诉我们去打扫教室。
tell sb. sth.告诉某人某事 eg：Tell me your name,please.请告诉我你的名字。
类似结构：ask sb.(not) to do sth.
5.反身代词是表示或强调自身的代词，表示自己，本身，亲自，有人称和数之分。
-152400-38100 数
人称
单数
复数
第一人称
??myself?我自己
?ourselves?我们自己
第二人称
??yourself?你自己
?yourselves?你们自己
第三人称
??himself?他自己
themselves
??他们自己
??herself?她自己
??itself?它自己
反身代词的用法：a.作动词或介词的宾语。 You must learn to look after yourself.
b.作主语或宾语的同位语。 I have to mail the letter myself.
（1）那是他的外衣。他会给自己穿衣服。
That’s his coat. He can dress __________.
（2） 小心那把小刀，否则你会伤着你自己。
Be careful of that knife, or you’ll cut __________.
（3）你们必须要照顾好自己，并保持健康。
You must look after __________ and keep healthy.
（4）她自学英语。
She taught _________ English.=She learned English by_________.
teach oneself=learn by oneself自学
练习：
—Hello! May I speak to Lily?
— Sorry, she isn’t in now. Can I ___ a message for you?
A. take B. leave C. go D. bring
（2）Dongdong’s bike is broken. He has to ___ one ___ his uncle to ride to school.
A. borrow; to B. borrow; from C. borrow; for D. want; from
（3） We ____ last night and told him the news.
A. ring up him B. ring him up C. rang him up D. rang up him
（4） It’s autumn. The farmers are busy ____ apples.
A. to pick B. pick C. picks D. picking
（5）—Hello! I’d like to speak to Wang Fang. —____.
A. I am Wang Fang. B. This is Wang Fang speaking.
C. Hello. I am her sister. D. I am Wang Fang speaking.
（6）The teacher tells us ____ her carefully in her class.
A. to listen to B. to listen C. listening to D. listen
（7）—Can you take a message, please?—Sure. I’ll tell her when she ____ back.
A. comes B. will come C. come D. came
（8）The teacher is sitting ___ the four students.
A. between B. among C. on D. among and
Section C
give a talk做报告，做演讲
2.need to do sth.需要做某事Everyone needs to obey the traffic rules.每个人都需要遵守交通规则。
3.stay+形容词=keep+形容词：保持某种状态stay safe=keep safe保证安全
Eat right to stay healthy.要饮食恰当以保持健康。
4.It’s necessary for sb. to do sth.对某人来说做某事是有必要的
It’s necessary for us to learn English well.对我们来说，学好英语是有必要的。
first aid急救6.on the other hand另一方面
stay away from sth.远离某物/某事
The teacher tells us to stay away from drugs.老师告诉我们要远离毒品
say no to sth.和...说不,对...说不
练习：
（1）The old man lived in the house _____, but he lived happily.
A. by themselves B. by himself C. by herself D. by myself
（2）The young man helped the blind man _____ the street.
A. cross B. through C. across D. to across
（3）—What do you _____ the new teacher? — He is kind, helpful and brave.
A. think about B. think of C. think over D. think
—How much did you spend ____ the MP4? —300 Yuan.
A. with B. for C. on D. in
（5）Jane’s mom works in other city, so she has to talk with her mother __ the phone.
A. in B. with C. of D. on
Section D
warm up做热身运动2.exercise equipment运动器材
buy sth. for sb.为某人买东西
instead of （介词短语）代替 take the place of（动词短语）代替
Eg：They can also do lots of dangerous work instead of humans.
They can also take the place of humans to do lots of dangerous work.
Unit2 Topic 3单词
1.problem 指困难问题，社会问题，数学问题，常与动词solve（解决）搭配。
question指提出并等待回答的询问、质问，常与动词answer（回答）或ask搭配。
solve the problem解决问题;answer the question回答问题
2.—May I...? —Sure,_____go ahead______.
3.stop/keep/prevent...from doing sth.阻止（避免）...做某事
stop from 与prevent from里的from可以省略,而keep...from的from不可以省略。
4.finally（副词）最后final（形容词）最后的
5.crowded（形容词）拥挤的crowd（动词）拥挤（名词）人群
6.happen发生，一般指偶然或突发性事件。sth.happen to sb.（事件）发生在...身上 What happened to you?你发生了什么事？
7.happiness（名词）幸福（形容词）happy快乐的unhappy（形容词）不快乐的
un-否定前缀：able-unable
8.on the other hand另一方面on one hand一方面
9.instead of代替，而不是，后加doing。
10.cooker厨具cook煮，厨师
11.advise（动词）建议advice（名词）建议（不可数）suggest（动词）建议suggestion（名词）建议（可数）
12.except除...之外（排除在外）
Our class has 49students except Tom.除了Tom，我们班还有49个学生。

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