大学英语：主谓一致的三条原则

（1）语法一致，即在语法形式上取得一致。

Human beings enjoy learning.

Everybody’s understanding is incomplete.

(2)意义一致，即根据意义来处理一致关系。

The people there are fighting for the independence of their country.

Ten dollars was a lot of money at that time.

（3）就近原则，即谓语动词的单、复数形式取决于最靠近它的词语。

There is a pen,two pencils and an eraser in the pencil box.

Neither the boy nor his teachers know the answer.