英语中的主谓一致是难点，也是高考热点。

“n1+of+n2”作主语时的主谓一致，采用意义一致原则。由于内容较多，所以单独作为专题讲解。

当“n1+of+n2”（简称of短语）作主语时，应该根据n1还是n2确定谓语的数？一般地，of短语，语义重心在右边（n2），根据of右边的名词确定谓语的数；若of左边的名词加the或-(e)s，则意在强调左边，语义重心转移到左边（n1）所以，此时根据of左边的名词确定谓语的数。

细分为以下情况：

下边详细讲解此表。

1. 大多数of短语，①当“a…of…”作主语时，根据of右边的名词确定谓语的数。②当“the/复数…of…”作主语时，根据of左边的名词确定谓语的数。这是因为，①当“a+n1+of+n2”作主语时，语义重心在of右边（n2），根据of右边的名词n2确定谓语的数。②但是，当“the+n1+of+n2”或“n1复数+of+n2”作主语时，把n1由a变为the或复数，意在强调n1，语义重心移到of左边（n1），根据of左边的名词n1确定谓语的数。

这些of短语有：①跟可数名词的，如，a(n) number/average/group of。②跟不可数名词的，如，a great deal of，a(n) bit/amount of。③跟可数或不可数名词的，如，a kind/sort/type of，a quantity/ proportion/variety/plenty of。

例句（number of）

A number of students help with the harvest.（a number of，许多的/大量的，谓语用复数。）

The number of students is increasing.（the number of，…的数量，谓语用单数。）

例句（quantity of）

A large quantity of books have been bought.

A large quantity of beer was sold.

The quantity of books in the library is amazing.

The quantity of heat in the office has been increased.

Large quantities of wheat are being sent abroad.

例句（其它）

A group of us have hired a boat for travelling.

A great deal of trouble lies before me.

2.有些“a+ n1+of+n2”作主语时，根据of左边的名词n1确定谓语的数。如，a pair/line/range/ series/species of；又如，各种量词a cup/piece of等。 如，

●A pair of shoes was under the desk.

●A line of forts was built along the border.

●A series of lectures is to be given by Mr. Smith.

●There is a cup of tea on the table.

●There are two cups of tea on the table.

3.有些“the+ n1+of+n2”作主语时（如，the rest/majority of），根据of右边的名词n2确定谓语的数。如，

●The rest of the bread is for breakfast.

●The rest of the questions are being discussed.

例句（百分数+of）

●20 percent of the work was done yesterday.

●20 percent of the students are absent today.

分组对比练习

题组（of型短语作主语时的主谓一致）

1—5题，number/quantity of。6—7题，分数+of。8—10题，the rest/majority of。

1. The number of foreign students attending Chinese universities ____ rising steadily since 1990.（2009,山东） A. is B. are C. has been D. have been

分析：①主语是the number of…，谓语用单数。②现在完成时。选C。

2. The number of people invited ____ fifty, but a number of them ____ absent for different reasons. (1996,全国) A. were; was B. was; was C. was; were D. were; were

分析：①第一空，主语是the number of…，谓语用单数。②第二空，主语是a number of them，谓语用复数。选C。

3.The school was moved out of downtown as the number of students had grown too____．（2010,四川）

A．small B．few C．1arge D．many

句意：这所学校搬到了市外，因为学生人数已经变得太多了。分析：从句的主语是the number of students,只有small和large能修饰number。再根据句意"人数变得太大"可知应选large。选C。

4. As a result of destroying the forests, a large ____ of desert ____ covered the land.(2001,上海)

A. number…has B. quantity…has C. number…have D. quantity…have 选B。

5. —Why does the lake smell terrible? —Because large quantities of water____.（2009,福建）

A.have polluted B.is being polluted C.has been polluted D.have been polluted

分析：①主语是quantities of …，谓语用复数。②现在完成时的被动语态。选D。

6. ____ of the land in that district ____ covered with trees and grass.(2000,上海)

A. Two fifths; is B. Two fifth; are C. Two fifth; is D. Two fifths; are 选A。

7. The company had about 20 notebook computers but only one-third _____ used regularly. Now we have 60 working all day long.（2006，浙江） A. is B. are C. was D. were 选D。

8. The factory used 65 percent of the raw materials, the rest of which ____ saved for other purposes. (2011,安徽) A. is B. are C. was D. were

分析：①主语是the rest of which（←the rest of the raw materials），谓语用复数。②一般过去时的被动语态。选D。

9. — Is everyone here?— Not yet. Look, there____the rest of our guests !（2010,江苏）

A. come B. comes C. is coming D. are coming

分析：①主语是the rest of our guests，谓语用复数。②不用进行时（参看时态章）。选A。

10. One-third of the country ____ covered with trees and the majority of the citizens ____ black people. (2011,湖南) A. is; are B. is; is C. are; are D. are; is

句意：这个国家的三分之一被树木覆盖，而且大多数市民是黑人。分析：One-third of the country is…and the majority of the citizens are…. 选A。