(1)must 一般用于肯定句，

表示对现在的情况进行推测、推断、猜测或判断，一般把握性较大。

You must be very hungry. Please come in and have something to eat.

【贵州贵阳】 "Whose notebook is this?" "It _____ Jim's . It has his name on it"

A. can't be B. must be C. can be

(2)含有must推测的句子变为反意疑问句，要根据must后面的动词来确定

There must be something wrong with the bike, _____________?

(3)含有must推测的句子变为否定句时，用can't"不可能"

There can't be something wrong with the bike.

【拓展】mustn't ，表示 "不准，禁止，不可以"

You mustn't lend the book to others.

【四川绵阳】School students _____ smoke because it is against the school rules.

A. needn't B. couldn't C. won't D. mustn't

【解析2】 writer= author n 作家

( ) ①Marktwain is my father's favorite author.

A. teacher B. writer C. doctor

( ) ②Lao She is the ____ of Tea House.

A. writer B. visitor C. reporter

5. I attended a concert yesterday so it might still be in the music hall.

昨天我参加了一个音乐会，所以它可能还在音乐厅。(2d)

【解析】attend v 出席；参加 attend a meeting 出席会议

【辨析】 join/take part in/attend

（1）join指加入某个党派, 团体组织等, 成为其中一员, 意为" 参军, 入党, 入团 "。

join the Army/the Party/the League

join sb. in (doing) sth. 和某人一道做某事

Will you join us in the picnic? 你参加我们的野炊吗？

join in多指参加小规模的活动如"游戏, 比赛", 口语中常用。

Join in the basketball game. 参加篮球赛。

（2）take part in 指参加群众性活动, 着重说明主语参加该项活动并在活动中发挥作用。

We'll take part in the sports meeting/club.

take an active part in 积极参加......

（3）attend 正式用语 attended a concert ______________

vt. 指参加会议, 婚礼, 葬礼, 典礼; 去上课, 上学, 听报告等。

句子主语只是去听, 去看, 自己不一定起积极作用。

Did you attend the meeting last Sunday?

①Some model teachers were invited __________ (attend) the meeting.

② I 　　　 　 (参加音乐会) last night. It was wonderful.

6.Do you have anything valuable in your schoolbag?(2d)

你书包里有什么贵重的东西吗？

【解析】value n 价值 → valuable adj. 贵重的；很有用的；宝贵的

I think nothing else in the world is more ___________ (有价值的) than my parents' love.

7.So it can't be stolen. 所以它不可能被偷(2d)

【解析】can't "不可能", 是否定推测，语气较有把握。

( ) - Whose shoes are these?

- They ____ be Mike's . They are much too large for him.

A. might B. may C. mustn't D. can't

8. I remember I had my schoolbag with me at the picnic.

我记得野餐时我背着我的书包了。(2d)

【解析】remember v　记住（反）　forget