主謂一致

he is one of my friends who are working hard.
注意：he is the only one of my friends who is working hard.
6、如果集體名詞指的是整個集體，它的謂語動詞用單數；如果它指集體的成員，其謂語動詞就用復數形式。這些詞有family, class, crowd, committee, population, audience等。
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。如：the police are looking for the lost child.
7、由"a lot of, lots of, plenty of, the rest of, the majority of + 名詞"構成的短語以及由"分數或百分數+名詞"構成的短語作主語，其謂語動詞的數要根據短語中后面名詞的數而定。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"，作定語修飾復數名詞，謂語用復數；the number of"...的數量"，主語是number，謂語用單數。
8、在倒裝句中，謂語動詞的數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必須和主語的意義一致（因有時主語形式為單數，但意義為復數；有時形式為復數，但意義為單數）。
1、what, who, which, any, more, all等代詞可以是單數，也可是復數，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.
2、表示"時間、重量、長度、價值"等的名詞的復數作主語時，謂語動詞通常用單數形式， 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.
3、若英語是書名、片名、格言、劇名、報名、國名等的復數形式，其謂語動詞通常用單數形式。如： "the arabian nights"is an interesting story-book..
4、表數量的短語"one and a half"后接復數名詞作主語時，其謂語動詞可用單數形式（也可用復數。如：one and a half apples is (are) left on the table.
5、算式中表示數目（字）的主語通常作單數看待，其謂語動詞采用單數形式。如：twelve plus eight is twenty. / fifty-six divided by eight is seven.
6、一些學科名詞是以 -ics 結尾，如：mathematics, politics, physics 以及news, works等，都屬于形式上是復數的名詞，實際意義為單數名詞，它們作主語時，其謂語動詞要用單數形式。如：the paper works was built in 1990. / i think physics isn't easy to study.
7、trousers, glasses, clothes, shoes, 等詞作主語時，謂語用復數，但如果這些名詞前有a (the) pair of等量詞修飾時，謂語動詞用單數。如：my glasses are broken. / the pair of shoes under the bed is his.
8、"定冠詞the + 形容詞或分詞"，表示某一類人時，動詞用復數。
（三）就近一致原則：在英語句子中，有時謂語動詞的人稱和數與最近的主語保持一致。
1、當兩個主語由either ... or, neither ... nor, whether ... or ..., not only ... but also連接時，謂語動詞和鄰近的主語一致。如：either the teacher or the students are our friends. / neither they nor he is wholly right. / is neither he nor they wholly right?