2、表示“時間、重量、長度、價值”等的名詞的復數(shù)作主語時，謂語動詞通常用單數(shù)形式， 這是由于作主語的名詞在概念上是一個整體，如：Thirty minutes is enough for the work.

1、what, who, which, any, more, all等代詞可以是單數(shù)，也可是復數(shù)，主要靠意思來決定。如：Which is your bag? / Which are your bags? / All is going well. / All have gone to Beijing.

8、在倒裝句中，謂語動詞的數(shù)應與其后的主語一致。如：There comes the bus./ On the wall are many pictures. / Such is the result. / Such are the facts.

　　　 (二)邏輯意義一致原則：邏輯意義一致就是謂語動詞的數(shù)必須和主語的意義一致(因有時主語形式為單數(shù)，但意義為復數(shù)；有時形式為復數(shù)，但意義為單數(shù))。

7、由“a lot of, lots of, plenty of, the rest of, the majority of + 名詞”構(gòu)成的短語以及由“分數(shù)或百分數(shù)+名詞”構(gòu)成的短語作主語，其謂語動詞的數(shù)要根據(jù)短語中后面名詞的數(shù)而定。如：There are a lot of people in the classroom. / The rest of the lecture is wonderful. / 50% of the students in our class are girls.

　　　 注意： a number of“許多”，作定語修飾復數(shù)名詞，謂語用復數(shù)；the number of“…的數(shù)量”，主語是number，謂語用單數(shù)。

6、如果集體名詞指的是整個集體，它的謂語動詞用單數(shù)；如果它指集體的成員，其謂語動詞就用復數(shù)形式。這些詞有family, class, crowd, committee, population, audience等。如：Class Four is on the third floor. / Class Four are unable to agree upon a monitor.

　　　 注意：people, police, cattle等名詞一般都用作復數(shù)。如：The police are looking for the lost child.

5、在定語從句時，關(guān)系代詞that, who, which等作主語時，其謂語動詞的數(shù)應與句中先行詞的數(shù)一致。如：He is one of my friends who are working hard. / He is the only one of my friends who is working hard.

4、either, neither, each, every 或no +單數(shù)名詞和由some, any, no, every構(gòu)成的復合不定代詞，都作單數(shù)看待。如：Each of us has a new book. / Everything around us is matter.

　　　 注意：① 在口語中當either或neither后跟有“of+復數(shù)名詞(或代詞)”作主語時，其謂語動詞也可用復數(shù)。如：Neither of the texts is (are) interesting. ② 若none of后面的名詞是不可數(shù)名詞，它的謂語動詞就要用單數(shù)；若它后面的名詞是復數(shù)，它的謂語動詞用單數(shù)或復數(shù)都可以。如：None of us has (have) been to America.

3、主語為單數(shù)名詞或代詞，盡管后面跟有with, together with, except, but, like, as well as, rather than, more than, no less than, besides, including等引起的短語，謂語動詞仍用單數(shù)形式；若主語為復數(shù)，謂語用復數(shù)形式。如：Mr Green, together with his wife and children, has come to China. / Nobody but Jim and Mike was on the playground. / She, like you and Tom, is very tall.

2、由連接詞and或both … and連接起來的合成主語后面，要用復數(shù)形式的謂語動詞。如：Lucy and Lily are twins. / She and I are classmates. / The boy and the girl were surprised when they heard the news. / Both she and he are Young Pioneers.

　　　 注意：① 若and所連接的兩個詞是指同一個人或物時，它后面的謂語動詞就應用單數(shù)形式。如：The writer and artist has come.; / ② 由and連接的并列單數(shù)主語前如果分別有no, each, every more than a (an) , many a (an)修飾時，其謂語動詞要用單數(shù)形式。如：Every student and every teacher was in the room.. / No boy and no girl likes it.

1、以單數(shù)名詞或代詞、動詞不定式短語、動名詞短語或從句作主語時，謂語動詞一般用單數(shù)形式；主語為復數(shù)時，謂語動詞用復數(shù)形式。如：His father is working on the farm. / To study English well is not easy. / What he said is very important for us all. / The children were in the classroom two hours ago. / Reading in the sun is bad for your eyes.

　　　 注意：由what引導的主語從句，后面的謂語動詞多數(shù)情況用單數(shù)形式，但若表語是復數(shù)或what從句是一個帶有復數(shù)意義的并列結(jié)構(gòu)時，主句的謂語動詞用復數(shù)形式。如：What I bought were three English books. / What I say and do is (are) helpful to you.