祈使句反义疑问句_过去完成时反义疑问句_i think反义疑问句(21)

Two months is quite a long time. 两个月时间是很长的。

Two hours is enough for us to do this experiment.我们做这个实验两个小时就够了。

Thirty kilometres is a good distance.30公里是一个相当远的距离。

注意：如果说话人侧重一个个的个体，谓语动词用复数形式。

Twenty years have passed since we parted.自从我们分手以后20年己经过去了。

（6）“a number of十复数可数名词”与“the number of十复数可数名词”作主语

“a number of十复数可数名词”表示 “一些、许多”的意思，谓语动词用复数；

“the number of十复数可数名词”表示 “……的数目、数量”，谓语动词用单数。

The number of people invited was fifty, but a number of them were absent for different reasons.

邀请来的人数是50，但很多人因不同的原因没来。

A number of books are missing from the library.

图书馆丢了许多书。

The number of workers in this factory is increasing.

这家工厂的工人数目正在增加。

（7）none of和neither of后跟复数名词或复数代词作主语

none of和neither of后跟复数名词或复数代词时，有时作单数看待，有时作复数看待，主要根据说话人的意思决定。

None of them has arrived yet at the settlement. 他们没有一个到达新住宅区。

None of them have arrived yet. 他们都还没到。

（8）“分数/百分数+of短语”作主语

“分数/百分数+of短语”作主语，这时要以of短语中的名词是否为复数而定。

Two fifths of the land in that district is covered with trees and grass．该地区五分之二的土地为树木和草所覆盖。

89% of smokers are male. 89%的吸烟者是男性。

In the USA, 75% of the grain is used to feed animals. 在美国，75%的谷物用来喂养动物。

Two-thirds of the earth's suce is sea. 地球表面的2/3是海洋。

Two-thirds of the people were against the plan. 2/3的人都反对核计划。

（9）表示部分概念或不定数量的名词或代词作主语

表示部分概念或不定数量的名词或代词作主语，谓语动词用单数还是复数，应根据后接名词的单、复数形式而定。

这些名间或代词有all，any，enough，half，more，most，the rest，part，some等。

The rest of the buildings are easy to get to. 其余的建筑物并不难上。

The rest of his life was happy. 他的晚年生活很幸福。

Most of my time was spent in reading. 我大部分时间用来读书。

Most of the people are aware of it. 大部分人都知道它。