【语法总结】主谓一致

　　一. 语法一致原则

　　即在语法形式上取得一致，谓语动词的单复数形式由主语的单复数形式决定。

　　1. 单数名词、不可数名词、单个动词不定式短语、动名词短语以及句子作主语时，谓语动词要用单数形式。

　　To see is to believe.

　　眼见为实。

　　Reading aloud is very important in learning English.

　　学习英语时大声朗读非常重要。

　　Whenthey could finish the task is not known yet.

　　他们何时能完成任务还未知。

　　Whoever wants to join in the competition is asked to sign his/her name here.

　　要参加比赛的人请在这里签名。

　　注意：what 引导的主语从句充当主语时，有时要以 what 所指代的词的意义来决定谓语动词的数。

　　What he said is true.

　　他所说的是真的。

　　What we need are more volunteers.

　　我们所需要的是更多的志愿者。

　　2. 由连接词 and 或 both … and 连接的名词、动词不定式短语、动名词短语以及句子作主语时，谓语动词要用复数形式。

　　What he said and what he did have greatly encouraged the other students.

　　他说的话及行为极大地鼓舞了其他学生。

　　Both his father and his mother are advanced workers.

　　他的爸爸和妈妈都是先进工作者。

　　注意：有时，一些用 and 连接的主语表达的却是单数的概念，这时谓语动词也应用单数形式。

　　(1)用 and 连接的名词表示同一人、同一物或同一概念作主语时

　　Bread and butter is nutritious for patients.

　　黄油面包对病人很有营养。

　　Early to bed and early to rise makes a man healthy, wealthy and wise.

　　早睡早起使人健康、富有和聪明。

　　These cretary and manager was speaking at the meeting.

　　那位书记兼经理在会上讲话。

　　(2)“each/every/no/ many a+ 单数名词+ and +each/every/no/many a + 单数名词”作主语时

　　Everyhour and every minute is precious.

　　每一小时，每一分钟，都很宝贵。

　　Noman and no woman is not allowed to enter the hall.

　　每个人都不允许进入大厅。

　　3. “名词+as well as, rather than, like, but, expect, besides, with, togetherwith, along with, including, in addition to+ 名词”结构作主语时，谓语动词同第一个名词的数保持一致。

　　Tomas well as two of his friends was invited to the party.

　　汤姆以及他的两个朋友一起被邀请参加宴会了。

　　Nobodybut one teacher and three students was in the lab.

　　实验室只有一个老师和三个学生。