新概念英语(三) lesson4(2)倍数表示法及be worth句法分析等补充语法
1. He will be earning only half as much as he used to, but he feels that his rise in status is well worth the loss of money.他将来挣的钱只有他现在的一半。不过他觉得，地位升高了，损失点儿钱也值得。
(1)) earning only half as much as he used to,挣的钱只有他现在的一半
half / a quarter / twice / three times as...as... 表示倍数
-- I won't marry a man who is twice as old as me.
-- We got three times as many people as we expected.
-- This room is about three times as large as that one.
(2) 是...的几倍：...as 形容词或副词原形 as...
(3) 比...多几倍：...times 形容词或副词比较级 than…
-- This road is four times longer than that one. 这条路是那条路的5倍长。
= This road is five times as long as that one.
常见常考类似的与“倍数”表达法有关的表还有：
【1】"A be 倍数 the 计量名词 of B "。 例如：
A friend of mine was making twice the salary of college instructors during her first year in that company.我的朋友在那个公司工作的第一年挣的钱就已经是大学教师薪水的两倍了。
The aeroplane will travel at twice the speed of sound. 这架飞机的速度将是音速的两倍。
That man is twice my weight. 那个男子的体重比我重一倍。
One month later, we will receive an order for the same product, but three times the quantity. 但一个月后，我们又接到同样的订单，而且要原来三倍的量。
Our school is four times the size of yours. 我们学校有你们学校的四倍大。
【2】"The 计量名词 of A be 倍数 that of B " 。 例如：
In tight turns , the force it can pull is ten times that of gravity. 在急转弯时，它的拉力能达到重力的10倍。
【3】表示增长的倍数比较关系可以用“动词 by 数词/百分比/倍数”来表达。例如：
six times the size（height，length，width，speed, output, weight, number, amount, quantity）
Indian’s population has been growing by 2.2 percent a year.印度的人口一直在以每年2.2%的速度增长。
【4】…times what 从句
The production is now three times what it was ten years ago.现在的产量是10年前的三倍。
The output is now six times what it was before liberation.现在的产量是解放前的六倍。
【高频语法难点把握】
2. his rise in status is well worth the loss of money.地位升高了，损失点儿钱也值得。
=What he obtained is well worth the loss of time. 他的所得是值得花时间的。
well 副词用来加强语气, 修饰形容词worth
worth的五个用法要点
要点一：(be) worth后接动词时，必须要用动名词形式，不可用不定式。这类结构在现代英语中也可改用形式主语it，
犯不上跟他们生气。
✘They are not worth to get angry with.
✔They are not worth getting angry with.
析：如上面的误句也可改为：
It isn’t worth getting angry with her.
再如：The film is worth seeing. / It is worth seeing the film.(这部电影值得看)。
要点二：(be) worth 后接动名词时必须用主动形式，即使该动名词与主语是动宾关系，具有被动意义，也不能按中文思维，想当然的用被动式。
这部影片很不错，值得再看一次。
✘The film is excellent.It’s worth reading a second time.
✔The film is excellent. It’s worth being read a second time.
要点三：worth 后接动词时要用动名词，但是注意这类结构有两个特点：
这家图书馆值得你去看看。
✘You are worth visiting the library.
✔It is worth your while visiting [to visit] the library.
例句分析：
①句子主语通常就是其后动名词的逻辑宾语；
②若句子主语不是其后动名词的逻辑宾语，那么其主语就应是形式主语 it。
另外注意：与 worth 后接动词必须用动名词不一样，worth (one’s) while 后接动词时可用动名词也可用不定式(且这类句型的主语通常是形式主语 it）。
要点四：要加强worth的语气，习惯上不用 very，而通常用 well。
他们上个月签下的这个项目很值得一试。
✘The program they made last month is very worth a try.
✔The program they made last month is well worth a try.
要点五：表示价值时，value＝价值(是名词)，和valuable＝有价值的(是形容词)，两者均不能后接 what从句，只可以用be worth句式。
这部日本造的手机不值你付的那些钱。
✘The mobile phone made in Japan is not value [valuable] what you paid.
✔The mobile phone made in Japan is not worth what you paid.
一、 有关“倍数”表达法基础演练:
1. 他的手有孩子手的四倍大小。
2. 他们的屋子大约是我们的三倍大小。
3. 资费一般是固定电话的2到4倍。
一、“倍数”练习基础练习参考答案：
1. His hands, four times as large, reached out slowly and held them as though they were holding up two tiny birds. 2. Their house is about three times as big as ours.3. The fee is typically two to four times as much as for calls made over fixed lines.二、 有关“倍数”表达拔高演练:
1. 这个热电站比那个热电站大三倍。
2.铁的重量几乎是铝的三倍。 3. 新扩建的广场为以前的四倍大。
二、”练习基础练习参考答案：1. This thermal power plant is four times larger than that one.2. Iron is almost three times as heavy as aluminum.3. The newly broadened square is four times the size of the previous one.三、有关“倍数”表达法基础演练:
（ ）1.—Will your mother______ you if you______ the English exam?
—Of course not. Because I am trying my best.
A. be angry with, don't pass
B. be angry with, won't pass
C. be angry to, don't pass
D. be angry to, won't pass
（ ）2sten! Some of the girls __________ about Harry Potter . Let's join them!
A.are talking B. talk
C. will talk D. talked
（ ）3.Our teacher , Miss Chen, _______ English on the radio the day before yesterday.
A. teaches B. taught
C. will teach D. had taught
（ ）4.I don't think I __________ you in that dress before.
A. have seen B. was seeing
C. saw D. see
（ ）5. She will have a holiday as soon as she ___________ the work next week.
A. finishes B. doesn't finish
C. will finish D. won't finish
（ ）6.---Where is Mr Green now ? I haven't seen him for a few days.
---He ___________ to Hong Kong.
A. goes B. will go
C. is going D. has gone
（ ）7. When she was 22 years old, her dream to be a teacher ____________.
A. came true B. come true
C. came real D. come real
（ ）8.-I won't come to the party unless Sue ______, too.
-You mean if Sue comes you'll come?
A.will invite B. invites
C. invited D. is invited
（ ）9.-Do you still have a headache, Billy? -No, it's ______. I'm all right now, mum.
A .dropped B. run C. left D. gone
（ ）10.-What are on show in the museum? -Some photos ______ by African children.
A. are taken B. were taken
C. taken D. have been taken
（ ）11.A talk on Chinese history ___ in the school hall next week.
A. be given B. has been given
C. will be given D. will give
（ ）12. You may go fishing if your work ____________.
A. is done B. will be done
C. has done D. have done
（ ) 13. The Olympic Games, first celebrated in Athens in 1896, every four years _______so far this century, except during the two world wars.
A. are held B. were held
C. have been held D. had been held
参考答案：
时态综合训练
1.A be angry with 意思是"同------生气"；含条件状语从句的复合句中，主句是将来时，从句一般用现在时。
2.A "Listen!"表明动作正在进行。
3.B the day before yesterday是一般过去时态的标志。
4.A 副词before一般与完成时态连用。
5. A 含时间状语从句的复合句中，主句是将来时，从句用现在时。
6. D has gone用于指"去某地了"（现在不在说话的地方）。
7. A come true意思是"成为现实"。主从句动词时态应该一致。
8. D 根据上下文意思，邀请的人不是Sue，"Sue"和"I"都是被邀请的对象，所以要用被动语态。
9.D 说"病好了，症状消失了"多用"be gone"。
10.C 根据句子结构，"Some photos"不是句子的主语，所以A、B、D三个用作谓语的动词不能用在这里。"taken"这里是"过去分词"，连同后面的词，一起作"Some photos"的定语。
11.C 主语是"A talk"决定了动词用被动语态，next week决定了要用将来时态。
12. A 主语是work, 又依语言环境用现在时。
13.A.奥运会作主语应用被动语态，叙述一般事实要用一般现在时。
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