但是如果and連接的是指一個單一概念時，謂語動詞用單數(shù)。

　　Bread and milk has been my breakfast for years. 牛奶面包多年來一直是我的早餐。

　　Her lawyer and old friend is going to marry her.她的律師和老朋友要娶她。

　　All this effort and sacrifice has come to nothing. 所有這些努力和犧牲都白費(fèi)了。

　　由and連接的單數(shù)主語分別有many a，ever y，each，no修飾時，動詞用單數(shù)。

　　如：During the holidays, every train and every plane was crowded.假期期間每列火車及每架飛機(jī)都非常擁擠。

　　No boy and no girl has the right to refuse education. 男孩和女孩都沒有拒絕教育的權(quán)利。

　　Man a man and man a woman was moved b this picture。許多男男女女都被這幅畫感動。

　　2.如果主語是一個抽象概念(如不定式、動名詞、主語從句等)謂語動詞用單數(shù)形式。如果主語是用and連接的兩個或多個抽象概念，謂語動詞用復(fù)數(shù)形式。

　　如：Swimming jogging and cycling are all goad farms of sports exercises.游泳、慢跑和騎自行車都是很好的運(yùn)動形式。

　　To live to eat is not a very goad attitude toward life. 活著就是為了吃不是好的生活態(tài)度。

　　To live to eat and to eat to live are very different attitudes toward life.

　　以what，who，why，haw, whether等wh一詞引起的從句做主語時，謂語動詞通常用單數(shù);由and連接的兩個主句如果指兩件事，動詞用復(fù)數(shù)。

　　例如:What he is doing is not clear yet他在干什么還不清楚

　　What he is doing and whether I know him are two different things.他在干什么和我是否認(rèn)識他是兩件不同的事。

　　What she told me is none of your business. 她和我說的什么用不著你管。

　　What she told me and what she told you are totally different things.

　　以what從句為主語的“主一系一表SVC"句型中，如果主句的表語是復(fù)數(shù)，主句謂語動詞用復(fù)數(shù)形式;what從句本身是復(fù)數(shù)意義，主句謂語動詞也可用復(fù)數(shù)。

　　如：What I need buy now are four tea cups and a pair of sports shoes.

　　我需要買的是四只茶杯和一雙運(yùn)動鞋。

　　What were thought to be five dogs were actually five sheep.

　　被認(rèn)為是五條狗的東西實(shí)際上是五只羊。

　　3.集體名詞family，class，crew(全體船員或機(jī)組人員)，crowd, group, committee, audience, government, public, team, staff, population等做主語時，若作為一個整體看待，后面謂語動詞用單數(shù); 如就其中每一個成員來考慮時，則用復(fù)數(shù)。

　　例如: My family is a big one.我家人多。

　　My family are all music lovers. 我全家人都愛好音樂。

　　Eighty percent of China' s population are peasants. 百分之八十的中國人口是農(nóng)民。

　　China has a huge population. 中國有眾多的人口。

　　The population of China is the largest in the world. 中國的人口是世界上最多的。

　　People, police, cattle,(牛)，militia(民兵)，poultry(家禽)，vermin(害出)等作主語時，后面的動詞要用復(fù)數(shù)。

　　如：There were many people waiting outside. 有許多人在外面等著。

　　The police are searching far the murderer. 警察在搜捕兇手。

　　The cattle are grazing in the fields. 一群牛在田野里吃草。

　　Foliage(樹葉)，machinery(機(jī)械)，equipment(設(shè)備) ,furniture(家具)，merchandise(商品)等通常做不可數(shù)名詞，動詞用單數(shù)，