4)The higher you climb,(空气就越稀薄).

十四、倒装句1)Scarcely had she fallen asleep(一阵敲门声就把她吵醒).

2)No sooner had Anne arrived(就生病了).

3)The husband was not hospitable to the visitor.(他妻子也没说一句欢迎的话).

4)Only then(那个医生才意识到他的病人需要手术).

5)Only when you adjust down your price(我们才能做成这笔买卖).

十五、强调句1)(正是Thomas Jefferson写下了)the Declaration of Independence.

2)(作者是带着真挚的情感)praises all that is progressive.

3)(正是因为水涨了)we could not cross the river.

4)(人们听见正是Jim这个无情的家伙)shouting at his mother in the dead of night.

5)(直到我告诉她)Mrs.Williams knew anything about it.

答案一、倍数增减的表示法1)is 2.5 times greater than Force N2

2)reacts three times as fast as the other one

3)is 49 times the size of the moon

4)wants to raise the rent by a third

5)plan to double their investment来源：www.examda.com二、时态1)or the wedding will have finished by the time we get to the church

2)the children had fallen asleep

3)my sister will be taking her vacation at the seaside

4)have been revising my resume all the morning

5)No.It has been five years since I went on holiday

6)He has been in the army for 5 years

三、被动语态1)is being replaced by the computer and the projector

2)will have been published by the end of this year

3)can be used to demonstrate the way that cells work

4)I was startled,for the prices were a great deal higher than I had anticipated

5)Effective measures must be taken immediately

四、情态动词1)but there is no answer.She can’t be at home

2)I may have left them in the coffee shop yesterday

3)You must have dreamed of something terrible

4)You should have invited her to your graduation ceremony

5)I needn’t have put on my best suit to go to the party

五、虚拟语气1)I had had your opportunities when I was young

2)he had known this disease is curable

3)painted it blue,and without any decorations

4)measures were taken to solve the problem of traffic jams

5)as though he were delivering a speech at an assembly

6)Jack(should)be sent to hospital right now

7)more mobile shops(should)be set up in the residential area

8)they(should)set up a special board/committee to examine this problem

9)the mid-term exams(should)be canceled