一、意義一致原則
主語後跟有以下引起的短語:謂語動詞仍與短語前的主語的形式保持一致。
1.1 (together) with: Alice (together) with her parents often goes to the park on Sundays.
1.2 except/but: Every picture except/ but these two has been sold.
Nobody but Mary and I was in the classroom at that time.
1.3 no less than: His sister, no less than you, is wrong.
1.4 rather than: The father, rather than the brothers, is responsible for the accident.
1.5 perhaps : Peter, perhaps John, is playing with the little dog.
1.6 like: He, like you and Xiao Liu is very diligent.
1.7 including/ besides/ as well as
二、就近原則
2.1 主語由以下連詞連接：謂語動詞與後一個主語一致:
2.2.1(Either)…or…: Either you or I am going to the movies.
2.2.2 Neither…nor…
2.2.3 Whether…or…
2.2.4 Not only…but (also)
2.2.5 Not…but…
2.2 there be 句型: be 動詞與後面第一個名詞一致
E.g. There is an apple, two bananas and some oranges on the plates.
2.3副詞here, there, now, then, up, down, in, out, away, such連接的全部倒裝結構中：謂語動詞由動詞後面的主語決定
On the wall hang two maps. 牆上掛著兩張地圖。
On the wall hangs a world of map. 牆上掛著一張世界地圖。
Such is the result. 結果就是這樣。
Such are the results. 這就是結果。
三、整體原則
3.1 並列主語如果指的是同一個人、同一事物或同一概念時，謂語動詞用單數，and後面的名詞沒有冠詞：
The writer and worker is coming to our school tomorrow.
（一個人）
The writer and the worker are coming to our school tomorrow.
（兩個人）
Bread and butter is their daily food.
3.2表示時間、距離、價格、度量衡等的複數名詞或短語作為一個整體看待時，謂語動詞常用單數形式：
E.g. Three years is not a long time.
Ten dollars is what he needs.
Five hundred miles is a long distance.
3.3複數形式的專有名詞作為整體看待（人名、地點、國家、組織、書籍、報刊等），動詞用單數形式：
E.g. The United Nations has passed a resolution(決議)。
「The Arabian Nights」（《天方夜譚》）is an interesting book.
3.4集合名詞people, police ,cattle作主語，謂語動詞用複數形式：
E.g. The police are searching for him.
The cattle are grassing (吃草)。
四、謂單原則
1. 單數名詞(代詞)，不可數名詞作主語時，謂語用單數形式，複數名詞(代詞)作主語，謂語用複數形式。
The desk is Tom’s. 這張桌子是湯姆的。
Some water is in the bottle. 一些水在瓶子裡。
The students are playing football on the playground. 這些學生正在操場上踢足球。
2． and連接的並列單數名詞前如有each, every, no修飾時，謂語動詞要用單數形式。
E.g. Every boy and girl has been invited to the party.
No teacher and no student is absent today.
Many a student is busy with their lessons.
3. 用many a, more than one 修飾名詞時，謂語動詞要用單數形式。
E.g. More than one person has made the suggestion.
Many a rough man has been civilized by his wife.
4. Each, Either, One, Another, The other, Neither作主語時，謂語動詞用單數形式：
E.g. Each takes a cup of tea.
Either is correct.
主語是each/every+單數名詞+and(each/every)+單數名詞時，謂語動詞用單數。
Each boy and each girl has got a seat. 每個男孩和女孩都有一個座位。
Every man and every woman is at work. 每個男人和女人都在工作。
5.由every, some, any, no構成的合成代詞作主語時，謂語動詞用單數形式：
E.g. Nothing is to be done.
6. means, politics, physics, plastics作主語時，謂語動詞用單數形式.
7. more than one+單數名詞作主語，謂語用單數。
More than one student has ever been to Beijing. 不止一個學生曾經去過北京。
8. 表示時間，價格，重量，數目，長度，數學運算等的詞或短語作主語時，這 些通常作一個整體概念，謂語用單數形式。例如：
Two months is a long holiday. 兩個月是一個長假。
Twenty pounds isn』t so heavy. 2 0英鎊並不太重。
Ten miles isn』t a long distance. 1 0英里並不是一段很長的距離。
Five minus four is one. 5減4等於1。
9. one and a half+複數名詞作主語，謂語動詞用單數形式。
One and a half hours is enough. 一個半小時足夠了。
10. 動詞不定式，動名詞作主語時，謂語動詞用單數形式。
To see is to believe 眼見為實。
Doing eye exercises is good for your eyes. 做眼睛保健操對你的眼睛十分有益。
11. a/an+單數名詞+or two 作主語，謂語動詞用單數。
五、具體情況原則
1. all, few, more, most, some, any, none, half, the rest等作主語時，既可表示複數意義，也可表示單數意義，謂語動詞要根據實際情況而定：
All of the apple is rotten. 整個蘋果都爛了。
不可數-> 謂單
All of the apples are rotten. 所有的蘋果都爛了。
可數-> 謂復
Most of the wood was used to make furniture.
Most of the people are from England.
2. the + 形容詞（或分詞）作主語時，常指一類人，謂語動詞用複數形式。如指的是抽象概念，謂語動詞則用單數形式：
E.g. The wounded are being taken good care of here now.
3. population當人口講時，謂語動詞用單數形式；當人們講時，謂語動詞用複數：
The population of China is larger than that of Japan.
One third of the population here are workers.
4. the number of + 名詞複數，是表示「…的數字」，作主語時，謂語動詞用單數形式；
a (large / great) number of + 名詞複數，表示許多，作主語時；謂語動詞用複數形式:
The number of the students in our school is increasing year after year.
A number of students have gone for an outing.
5. 有些集體名詞如family, team, group, class, audience, government等作主語時，如看作是一個整體，謂語動詞則用單數形式；如強調各個成員時，謂語動詞要用複數形式：
My family is going to have a long journey.
My family are fond of music.
The class has won the honour.
The class were jumping for joy.
六、先行詞原則
關係代詞who, that, which等在定語從句中作主語時，其謂語動詞的數應與句中先行詞的數一致。
He is one of my friends who are working hard.
He is the only one of my friends who is working hard.
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