1.并列结构作主语时谓语用复数，例如：

　 Reading and writing are very important. 读写很重要。

　 注意：当主语由and连结时，如果它表示一个单一的概念，即指同一人或同一物时，谓语动词用单数，and 此时连接的两个词前只有一个冠词。例如：

　 The iron and steel industry is very important to our life. 钢铁工业对我们的生活有重要意义。

典型例题

　 The League secretary and monitor ___ asked to make a speech at the meeting.

A. is　B. was　 C. are　 D. were

答案B. 注： 先从时态上考虑。这是过去发生的事情应用过去时，先排除A.，C。本题易误选D，因为The League secretary and monitor 好象是两个人，但仔细辨别，monitor 前没有the，在英语中，当一人兼数职时只在第一个职务前加定冠词。后面的职务用and 相连。这样本题主语为一个人，所以应选B。

主谓一致是指：

1) 语法形式上要一致，即单复数形式与谓语要一致。

2) 意义上要一致，即主语意义上的单复数要与谓语的单复数形式一致。

3) 就近原则，即谓语动词的单复形式取决于最靠近它的词语，

　　 一般来说，不可数名词用动词单数，可数名词复数用动词复数。例如：

　　 There is much water in the thermos.

　　 但当不可数名词前有表示数量的复数名词时，谓语动词用复数形式。例如：

　　 Ten thousand tons of coal were produced last year.

　 BCAACDBDCDBDBACAACCB

20.　　 I was worried very much because I’ll miss my flight if the bus arrives ______.

a. lately　　 b. late　　 c. latter　　 d. more later

19.　　 The doctors have tried ______ to save the life of the wounded soldier.

a. everything possible humanly　　 b. humanly everything possible

c. everything humanly possible　　 d. humanly possible everything

18.　　 When she got her first month salary, Diana bought herself ______ dress.

a. a cotton , blue …expensive　　 b. an expensive … blue, cotton

　 c. a blue, expensive … cotton　　 d. a cotton, expensive… blue

17.　　 although the medicine tastes ______, it seems to help my condition.

a. bad　　 b. badly　　 c. too much bad　 　d. too badly

16.　　 We’d better wait _______ , Peter and Tom will come very soon.

a. a little longer　　 b. more longer　　 c. long　　 d. as longer

15.　　 ______ the child expresses his interest in an activity, the stronger it will become.

a. The more frequent　　 b. The frequenter　　 c. The more frequently　　 d. the frequentlier

14.　　 Kasia is taking her ______ tour of the shops in search of bargains.

a. daily　　 b. day　　 c. day time　　 d. night