主语与谓语的一致：在英语表达中，谓语动词的形式要和主语的人称和数保持一致。主要体现在be动词，助动词do, have 以及一般现在时态中的动词形式。
谓语动词与主语保持一致的基本原则：语法一致，就近一致和意义一致。
名词或代词做主语有人称和单，复数之分，动词的单数就是第三人称单数形式，而动词的复数形式即动词的原形。
1. I am seventeen, and he is sixteen.
2. There is a desk in the room, but there are no chairs in it.
3. John gets up at six o’clock every morning.
4. What is the latest news about the Olympic Games ?
5. The family are sitting at the breakfast table.
(1)这部分主语表示的是两个人或两件不同的事物，谓语动词用复数形式。
① My brother and I have both seen that film.
② Both rice and wheat are grown in this part of China.
③ The poet and the novelist were both present at the meeting.
④ Reading, writing and arithmetic are called the three R’s.
(2)这部分主语表示具有两个身份或性质的同一个人或一个完整的事物，谓语动词用单数形式。
① The professor and writer is speaking at the meeting.
② War and peace is a constant theme in history.
③ One more knife and fork is needed.
④ The statesman and poet was engaged in warfare all his life.
⑤ Law and order has been established.
⑥ Bread and butter is our daily food.
⑦ Fish and chips is a popular fast food.
⑧ The stars and stripes is the national flag of U.S.A.
(3)这部分主语前面有each, every, many a, no 等修饰时，谓语动词一般用单数形式。
① Each doctor and(each)nurse was given a new shirt.
② No sound and no voice is heard.
③ Many a boy and girl has made the same mistake.
④ Every minute and every second is precious.
2. 动名词，不定式，主语从句做主语时，谓语动词用单数形式。
① Reading is a great pleasure in life.
② To live means to create.
③ That we need more time is obvious.
④ What is needed is food and medicine.
