4. The composition is good in language but it has poor content. [答疑编号506494030639：针对该题提问]
【正确答案】The composition is good in language but poor in content.
【答案解析】两句话是同一个主语“the composition”，去掉重复部分可以使句子更简
洁。but在这里是副词，表示不过、另一方面。答案为The composition is good in language but poor in content.
5. The young man is honest and hard-working, and a man you can rely on. [答疑编号506494030640：针对该题提问]
【正确答案】The young man is honest and hard-working, and can be rely on. 【答案解析】and往往连接两个并列结构。答案为The young man is honest and hard-working, and can be relied on.
Section B
Directions: Supply a topic sentence for the following paragraph.
________________________________________.For example, in Britain, cigarette advertisements not allowed on TV or radio. The American government requires manufacturers to print a warning tsmoking is dangerous to health on every pack of cigarettes. In China, a law is being drafted bathe sale of tobacco products to people under eighteen. There is no doubt that anti-smoking campworldwide are making more and more people aware of the dangers of smoking and enlisting more anmore in the fight for cleaner air. [答疑编号506494030641：针对该题提问]
【正确答案】Many countries are fighting smoking.
【答案解析】下一句的“for example\已经给出了信息，开头句一定和下边举出的例子紧
密相关，换句话说，这些例子都是对开头句的解释说明。作者列举了英国、美国和中国的有关反香烟的行为和法律条文。由此可以看出，开头句与各国反烟有关。
Text B
Grammar in Focus 情态动词（Modal Verbs）
情态动词表示说话人对所述事件或状态的看法或评价。与助动词不同的是，情态动词有自己的词义。情态主要具有以下特征：后面只能接不带to的不定式（ought to和used to可视为固定的情态动词短语）；没有定形式，即没有不定式、现在分词或过去分词等形式；没有人称和数的变化；彼此间相互排斥，即情态动词不连用，一个限定动词词组中只能用一个情态动词。情态动词主要有can, could, may, might, must, ought need, dare。
一、几个常用情态动词的意义和用法 ※can/could
表示能力、允许、可能、请求、建议等含义。例如：
He was born in Hong Kong, and can speak both English and Chinese very well.
This sort of thing cannot go on any longer. Could you babysit for us on Friday? ※may/ might
表示允许、许可、请求、可能等含义。例如： May I take this book out of the library?
Take an umbrella with you. It may rain at any moment.
This might be our last chance to defeat our rival in the competition. ※must
表示必须或完全确定含义。例如：
We must reconsider the whole situation before we make the final decision. You must be tired.
-Must we send in our outlines for the final thesis next week? -Yes, you must. （No, you needn't.） ※need, dare
这两个动词分别表示需要和敢于的意思，既可用作普通动词，也可用作情态动词。例如： Nothing need be done about this till next week. He needs to lose a bit of weight.
I daren't/don't dare to think how much it is going to cost. 二、情态动词+不定式的完成形式
情态动词后有时可接动词不定式的完成形式，表示对已经发生的事情的推测或看法。常见的用法有： ※must + have + 过去分词
用于表示推测过去某事一定发生过，例如：
You look so sleepy. You must have sat up late last night. I wrote her a letter a week ago. She must have received it. ※may （might） + have + 过去分词
用于对过去已经发生过的事情表示推测, 只不过不像must + have ＋过去分词表示的推测把握这么大，“可能已经”或“或许已经”。例如：
Our rival may have already known about our plan.
From the noise the crowd is making, I think our team may have won. ※needn't + have +过去分词
用于表示“本来没有必要做某事而做了某事”。例如：
You needn't have come here by yourself. You could have asked your bother to accompany you. You needn't have washed all those dishes, you know — I'd have done them myself when I got ※should /ought to have + have + 过去分词
用于表示过去应该做某事而实际未做，可译为“本来应当……”或“本该……”。这里，ought to与sh可互换使用。其否定形式should not + have +过去分词表示发生了本不该发生的事。例如： I should have written to her but I haven't had time.
We oughtn't to have agreed without knowing what it would cost.
Exercises
Directions: Choose the best answer to each of the following questions.
1. He______________ be in Beijing because I saw him in town only a few minutes ago. A） mustn't B） can't
C） may not D） isn't able to
[答疑编号506494030701：针对该题提问]
【正确答案】B
【答案解析】译文：他不可能在北京，因为几分钟前我在镇上看见他了。mustn't意为“禁止”；can't意为“不可能”；may not意为“可能不”；isn't able to意为“不能
够”。根据because引导的原因状语从句知此处表示一种完全不可能，要用can't。答案为B。
2. You______________ to the meeting this afternoon if you have something important to do. A） needn't to come B） don't need come C） don't need coming D） needn't come
[答疑编号506494030702：针对该题提问]
【正确答案】D
【答案解析】译文：如果你有重要的事情做，你今天下午可以不必来参加会议。need既可 作实义动词也可作情态动词。作实义动词要用need to do，作情态动词时后面直接接动词原形或动词ing表被动。A中接了不定式，排除；否定形式应该是don't need to come，因此B和C也错；D中的need用作情态动词，直接接动词原形。答案为D。
3. From the tears in Nedra's eyes, we can deduce that something sad______________. A） must have happened B） would have happened C） might be happening D） should happen
[答疑编号506494030703：针对该题提问]
【正确答案】A
【答案解析】文：从Nedra眼中的泪水，我们可以推断肯定发生伤心的事情了。分析句意 知本题要用情态动词接完成时表示对过去的事情的推测,C和D都不正确。must have done表示对过去事情的推测；would have done 常用于虚拟语气中，有将来的意味。显然A符合题意。答案为A。
4. My pain_______________ apparent the moment I walked into the room, for the first man I masked sympathetically, \ A） must be B） had been
C） must have been D） had to be
[答疑编号506494030704：针对该题提问]
【正确答案】C
【答案解析】译文：我走进房间的时候，我的痛苦肯定表现得很明显，因为我见到的第一
个人就同情地问道，“你还好吗？”从句意知本题是对过去已经发生了的事情的肯定推测，要用情态动词接完成时。答案为C。
5. As it turned out to be a small house party, we________ so formally.
A） needn't dress
B） didn't need have dressed C） did not need dress D） needn't have dressed
[答疑编号506494030705：针对该题提问]
【正确答案】D
【答案解析】译文：由于这只是个小型家庭聚会，因此我们没必要穿得如此正式。根据句
意和分句的谓语动词turned out可知本题要用needn't have done来表示本来没有必要做某事，但是事实上已经做了。答案为D。
6. I regret having left the work unfinished; I_______ everything ahead carefully. A） should plan
B） should have planned C） must have planned D） have planed
[答疑编号506494030706：针对该题提问]
【正确答案】B
【答案解析】译文：我后悔事情没做完就走了；我应该提前把一切都计划好的。根据句意知本题是表示过去应该做某事，但是实际没做，要用should have done。答案为B。
7. Peter was seen crying when he was coming out from the principal's office. We can deduce he_________ by the principal. A） must have been punished B） may be punished
C） should have been punished D） must be punished
[答疑编号506494030707：针对该题提问]
【正确答案】A
【答案解析】译文：当Peter从校长办公室出来的时候，我们看见他哭了。由此可以推断
出他肯定被校长处罚了。由句意知本题表示对过去发生的事情的推测，应该用must have done。另外此处是“被处罚”，应该用被动语态。答案为A。
8. Whatever Peter has done, we_________ like him to come and visit us. A） does B） would C） should D） had
[答疑编号506494030708：针对该题提问]
【正确答案】B
【答案解析】译文：无论Peter做了什么，我们都欢迎他来看我们。would like to do =
want to do.意为“想要……，愿意……”，是固定搭配。而would like的语气更委婉。答案为B。
9. When we reached the station, the train had not yet arrived, so we ________. A） needed not to hurry B） needn't have hurried C） need not to have hurried D） didn't need to hurry
[答疑编号506494030709：针对该题提问]
【正确答案】B
【答案解析】译文：当我们到达火车站时，火车还没来，因此我们本来不必慌张。根据句
意知我们本来没有必要这么hurry，但是实际上我们 hurry了，要用needn't have done来表示。答案为B。
10. Look what you've done! You_______ more careful. A） may be B） should have been C） will be D） would have been [答疑编号506494030710：针对该题提问]
【正确答案】B
【答案解析】译文：看看你都做了些什么！你本来应该更加细心的。根据句意知本题有责
备埋怨的感情色彩，要用should have done来表示本来应该做，但是实际上没做之意。答案为B。
11. I don't believe him — he _______ be serious. A） needn't B） can't C） may not D） mustn't [答疑编号506494030711：针对该题提问]
【正确答案】B
【答案解析】译文：我不相信他——他不可能是认真的。A表示“没必要”；B 表示“不可能”；C表示“或许不”；D表示“禁止”。根据题意知B正确。答案为B。
12. We __________ her letter last week. We don't know what has happened to her. A） must receive B） must have received C） ought to receive D） ought to have received [答疑编号506494030712：针对该题提问]