新一轮中考复习备考周期正式开始，中考网为各位初三考生整理了中考五大必考学科的知识点，主要是对初中三年各学科知识点的梳理和细化，帮助各位考生理清知识脉络，熟悉答题思路，希望各位考生可以在考试中取得优异成绩！下面是《2018初中英语语法之主语一致原则》，仅供参考！
主语一致原则:即主语为单数,谓语用单数,主语为复数,谓语也用复数.
1.带有with,along with,together with,like(象),but(除了),except,besides,as well as,no less than,rather than(而不是),including,in addition to引导的短语,谓语动词的数与主语的数保持一致.
如:Air as well as water is matter.空气和水都是物质.
No one except two servants was late for the dinner.除了两个仆人外,没有一个人迟来用餐
2.用and连接的并列主语,如果主语是同一个人,同一事,同一概念,谓语动词用单数,否则用复数.如:
The poet and writer has come.那位诗人兼作家来了.(一个人)
A hammer and a saw are useful tools.锤子和锯都是有用的工具.(两样物)
3.不定式(短语),动名词(短语),或从句作主语时,谓语动词用单数.如:588.es
Serving the people is my great happiness.
为人民服务是我最大的幸福.
When we’ll go out for an outing has been decided.
我们什么时候出去郊游已决定了.
4.并列主语被each,every或no修饰时,谓语动词用单数.
Every boy and every girl likes to go swimming.每个男孩和每个女孩都喜欢去游泳.
No teacher and no student was absent from the meeting.没有老师也没有学生开会缺席.
Each man and(each)woman is asked to help.每个男人和每个女人都被请去帮忙.
5.若主语中有more than one或many a/an,尽管从意义上看是复数,但它的谓语动词仍用单数.但more+复数名词+than one做主语时,谓语动词仍用复数.如:
Many a boy likes playing basketball.许多男生都喜欢打篮球.
More than one student was late.不只一个学生迟到
More persons than one come to help us.不止一个人来帮助我们.
6.名词如:trousers,scissors,clothes,goods,glasses等作主语时,谓语动词必须用复数.如:
His clothes are good.但这些名词前若出现a pair of,谓语一般用单数.如:
A pair of glasses is on the desk.桌上有一副眼镜.
7.形复意单名词如:news;以ics结尾的学科名称如:physics,mathematics,economics;国名如:the United States;报纸名如:the New Times;书名如:Arabian Night<天方夜谈>;以及The United Nations<联合国>等作主语时,谓语动词用单数.
8.“a+名词+and a half“,“one and a half+名词”,“the number of+名词”等作主语时,谓语动词要用单数.如:
Only one and a half apples is left on the table.
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