Ⅳ 主谓一致
1． 主谓一致是指谓语动词要与主语单、复数形式及人称变化相一致。主要包括三方面：形式一致、意义一致、就近原则。
2． 单数名词、不可数名词作主语，谓语用单数；复数名词作主语，谓语用复数；若主语表示单数或整体概念时，谓语应用单数。
Time is money . / My book is new . / Our books are there . / His family isn't very large . / His family are all music lovers .
3． 有些名词以"s"结尾，但谓用单数。（news, physics, maths, politics等） Maths is very important to us .
4． People, police, youth, cattle等常作复数处理。 The youth are full of living .
5． 既作单数又是复数的名词，可作单、复数。（sheep, fish, deer, Chinese, Japanese…）
There is one deer / are some deer in the zoo. / I met a Japanese in the street . / The Japanese I met in the street were friendly .
6． 当主语是两个名词由and 连接时，若表示一种事物或一种概念时，谓语用单数。
The teacher and writer is coming（同一个人） . / The teacher and the writer are coming .(不同人)
7． 有every 或each 修饰的单数名词并列时，谓语动词用单数，第二个every或each 可省略。Every boy and (every)girl has a new book.
8． 表示时间、距离、金钱或数量的复数名词，一般视为一个整体，谓语用单数。A hundred miles is a long distance .
9． 有些形容词前加定冠词构成表示一类人的名词，常用复数处理。The rich are getting richer. / The blind are sitting on the road .
10． Number, population 等词可作单数或复数，主要从意思决定。A number of books are new. / The number of books is 3,000.
The population of China is very large . / One third of the population here are workers.
11． 当名词后有with, together, like, but, except等介词短语时，谓语随名词的数而变。 Tom with his parents has been to Beijing twice .
12． Each和由some, any, no, every构成的复合代词，都作单数看待。Each of us has an apple. / Somebody is using the photo.
13． What, who, which, any, more, most, all等代词可以是单、复数，主要靠意思决定。Which is your room ? / Which are your rooms ?
14． "None 或none of+名词（代词）复数"可作单、复数，若名词为不可数，则谓语只用单数。
None of the books are easy enough for us . / None of us has got a camera. / None of milk is good.
15．"Either, neither (+of +名（代）词复数"作主语时，通常看作单数。Neither of us has been to HongKong . / Either answer is wrong .
16．"many a +单数名词"或"more than one +单数名词"作主语时，谓语多用单数形式。More than one person has that kind of experience.
17．All/most/half/part/some/the rest of +不可数名词，谓语用单数。 All of meat is bad .
18．All/most/half/part/some/the rest of +可数名词复数，谓语用复数。 Some of students are absent .
19．"one of +名（代）词复数"为主时，谓语通常用单数。One of the girls is from America .
20．"a pair of +名词复数"作主语时，谓语常用单数，若pair是pairs时谓语用复数。
21．"（a）part of +名词"作主语时，若名词是单数，谓语用单数；若名词是复数，谓语用复数。
22．"a group of +名词"作主语时，强调整体，谓语用单数；若强调group 中的各成员，谓语用复数。
23．"a lot of /lots of +名词复数"作主语时，谓语用复数；若名词为不可数名词，谓语用单数。
24．"most of +名词复数"作主语时，谓语用复数；若名词为不可数名词，谓语用单数。
25．"plenty of +名词复数"作主语时，谓语用复数；若名词为不可数名词，谓语用单数。
27．由either…or, neither…nor, not only…but also, or或there be + 名词＋and + 名词等连接的主语，通常根据就近原则，谓语的单、复数形式依最接近它的名词词组的单、复数形式决定。
My parents or I am going to visit my grandparents .
Either your father or your mother has been to the Great Wall .
Neither you nor Lao Yang is to do the work .
There is a man and three children over there .
Not only you but also he knows that thing .
28．动词不定式和动词－ing形式作主语时作单数处理。
To see you is very glad . = It is very glad to see you .
Taking means no holes .
Seeing is believing .
Finishing the work takes me a long time . = To finish the work takes me a long time . = It takes me a long time to finish the work .