新概念第二册课后题答案详解：Lesson53

2015-04-02 15:13:59来源：网络

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　　新概念第二册课后题答案详解大全

　　新概念英语第二册课后习题Lesson 53

　　1.关键句型练习答案

　　A What happened: began(1.2);examined(1.4);were not able to find(1.5);did not start (1.6);discovered(1.7); noticed (1.8);was wound(1.8);was able to solve(1.9);dropped (1.10); wound(1.11); it did so(1.11); sent(1.11); started(1.11) What has happened: have put out(1.1) What has been happening: have been trying to find(1.2)

　　C Jack looked at his watch for the twentieth time. Suddenly Jill arrived.

　　‘I've been waiting for over an hour,’he said angrily.‘You never come on time.’

　　‘Oh, is that so?’Jill answered.‘Were you here at 2.30?’Jack went red.‘Well,’ he said,‘I got here five minutes late myself, but you weren't here.’

　　‘I came here at exactly 2.30,’Jill said,‘and I waited for five minutes, but you didn't come.’

　　‘What have you been doing since then?’Jack asked.‘I've just been to the hairdresser's,’Jill answered brightly.

　　2.难点练习答案

　　a Look: you threw the potato-peeler away by mistake.

　　The shepherd threw some food to his dogs.

　　The teacher threw some chalk at a boy who wasn't listening.

　　b I'm quite certain these are my glasses.

　　The children are very quiet. What's going on?

　　c The cause of unemployment is complicated.

　　Can you explain the reason for changing our arrangements?

　　He reasoned that we would have to comply, even if we didn't wish to.

　　d Please don't drop that vase!

　　It fell from my hands and broke.

　　3.多项选择题答案

　　1. c

　　根据课文第二行… they have been trying to find out how the fire began 可以判断出只有c. wanted to find out what had caused the fire 最能说明消防队员仔细查看地面的原因，其他3个选择都不够全面。

　　2. d

　　根据课文第10-12行A bird had snatched up the snake from the ground and then dropped it on to the wires… When it I did so, it sent sparks down to the ground and these immediately started a fire 可以判断只有d. a snake which had been dropped on to the wires by a bird 与课文的实际内容相符，只有它是引起火灾的原因，其他3个选择都不符合课文的实际内容。

　　3. a

　　只有a. since最合乎题目意思和语法。因为本句是现在完成进行时，只有since引导的时间短语最适合于完成进行时态，表示“自从……以来”，所以应该选a.其他3个选择都不能引导合适的时间短语。

　　4. c

　　本句表示时间的词是often, 表示经常性的动作，因此应该用一般现在时。 a. is causing 是进行时，b. has caused 是完成时，d. is caused by 是现在时被动语态，而本句需要主动语态。只有c. causes 是一般现在时，第3人称单数形式，本句的主语Broken glass 是单数，所以c.最符合语法，所以选c.

　　5. c

　　a. almost certain(几乎肯定)， b. fairly certain(相当肯定)，c. completely certain(完全肯定)， d. nearly certain(几乎肯定)4个选择中只有c. 同前一句中的quite sure(十分确信)意义最接近，所以选c.

　　6. c

　　只有c. succeeded in solving it (成功解决了它)同前一句中的 was able to solve the mystery (解开了这个谜)的含义相同，所以c.是正确答案。其他3个选择都与前一句意思不符。

　　7. d

　　只有d. on是对的,因为它后面的词是the ground,表示在地面上,只能用介词on.其他3个选择都不符合题目意思.

　　The snake had been on the ground.这条蛇在地面上。

　　注意本句说的是在蛇被抓起之前，它在哪?它在地面上。

　　8. c

　　a. controlled it (控制了它);b. checked it (制止了它); c. extinguished it (扑灭了它);d. turned it off (关掉，关上它)，只有c. extinguished it 与前面一句中的 put out the fire (把火扑灭) 意义相同，所以选c.

　　9. d

　　只有d. this morning 今天早上, 是正确的表达方式.其它3个选择都不符合习惯用法,都不是正确的表达方式.所以选d.

　　10. a

　　a. by chance (偶然)，b. chancily (没有这个词);c. fortunately (幸运地) 和d. luckily (侥幸地，幸运地)这4个选择中只有a. by chance 同前一句中的accidentally (偶然地)意义相同，所以选a.

　　11. c

　　前一句的短语In this way 是"用这种方法",本句需要选一个同这一短语含义相符合的短语.

　　a. That's so 就是如此

　　b. like this 像这样

　　d. so 因此, 这3个选择都不符合题目意思.

　　只有c. That's how(那就是....的方法)同In this way 的含义相符合,因为how 相当于the way in which ,所以选c.

　　12. c

　　a. taken(拿), b. pulled(拉,拖), c. seized(抓住)和d. carried(携带)4个选择中只有c. seized同前一句的snatched(抓住)意义相同,所以选c.