1. 整体及抽象概念作主语，谓语通常用单数形式。
How you got there doesn’t concern me.
Growing vegetables needs constant watering.
2. 表示时间、距离、重量、容量、价值等概念作主语，谓语多用单数。
Eight hundred dollars is enough to live on.
3. 以-s结尾的专有名词(linguistics, economics, measles, diabetes等)，谓语通常用单数形式。
4. “分数或百分数+主语”，谓语跟主语保持一致。
Two thirds of the villages are flooded (the area is under water).
5. 不定代词(one, each, everyone, everybody, everything, no one, nobody, nothing, anyone, anybody, anything, someone, somebody, something等)作主语，谓语用单数。
Everyone knows that you’ve come here.
If anybody wants to see me, let them wait till I come back.
(--thing 的情况例外)6. 谓语同并列主语的第一部分保持一致(as well as, with, along with, together with, as much as, accompanied by, besides, but, except, in addition to, like, more than, no less than, rather than, including等)He no less than John is interested in literature.
7. 谓语同最贴近的主语保持一致。(or, either…or, neither…nor, not only…but also, not…but, partly…partly等)Either my father or my brothers are coming.
8. each,every,many a, no …+主语，谓语用单数。
Many a student and teacher has been to the Great Wall.
真题剖析
(2000) …Mexico City already 52 twenty million people and Calcutta twelve million. According to the World Bank, 53 of Africa’s cities are growing by 10% a year, 54 of urbanization ever recorded.
53. A. none
B. few
C. any
D. some