1.某些集體名詞如果作為一個(gè)整體來(lái)看待,謂語(yǔ)動(dòng)詞用單數(shù)形式,如果表示集體中的個(gè)體成員,謂語(yǔ)動(dòng)詞就要用復(fù)數(shù)形式。
這類(lèi)集體名詞包括:audience(觀眾),class(班級(jí)),club(俱樂(lè)部),company(公司),crowd(人群),government(政府),group(團(tuán)隊(duì)),team(隊(duì)伍)等。如:My family is a small one with three people.
但people,police,cattle等,只能按照復(fù)數(shù)對(duì)待,謂語(yǔ)動(dòng)詞必須用復(fù)數(shù)。
如:The people around us are all friendly and helpful.
如:Ten years for them was so long because they led a working but hard life.
3.由“a pair(a kind,a bottle…)+of+復(fù)數(shù)名詞”作為主語(yǔ)時(shí),謂語(yǔ)動(dòng)詞要用單數(shù)形式,但由“pairs( kinds,bottles…)+of+復(fù)數(shù)名詞”作為主語(yǔ)時(shí),謂語(yǔ)動(dòng)詞要用復(fù)數(shù)形式。
如:This pair of shoes is very nice but expensive.
4.不定代詞each,every,no所修飾的名詞即使以and或逗號(hào)連接成多主語(yǔ)時(shí),謂語(yǔ)動(dòng)詞仍用單數(shù)形式。
如:Each boy and each girl was given a new book.
5.某些只有復(fù)數(shù)形式的名詞(glasses,clothes,trousers,shoes,chopsticks,scissors等),謂語(yǔ)動(dòng)詞用復(fù)數(shù)形式。
如:Those shoes are put under the desk.
6.and或both…and連接并列主語(yǔ),謂語(yǔ)動(dòng)詞通常用復(fù)數(shù)形式。如:Walking and riding are good exercises.
但并列主語(yǔ)如果指的是同一個(gè)人、同一事物或同一概念,謂語(yǔ)動(dòng)詞用單數(shù)形式。
如:A knife and fork is on the table.
7.當(dāng)主語(yǔ)中含有as well as,in addition to,(along)with,together with,except,besides,including等引導(dǎo)的詞組時(shí),其謂語(yǔ)動(dòng)詞的單、復(fù)數(shù)依據(jù)他們前面的主語(yǔ)而定。
如:Jack as well as his parents has been to China before.
但either…or,neither…nor, not only…but also和There be出現(xiàn)在句中時(shí),謂語(yǔ)動(dòng)詞的單復(fù)數(shù)就要采用就近原則。
如:There is a photo and two maps on the wall.
Neither her sisters nor Mary is going to the party tomorrow.
如:Ten percent of the water is polluted there.
9.由a number of+名詞復(fù)數(shù)做主語(yǔ)時(shí),謂語(yǔ)要用復(fù)數(shù)形式;由the number of+名詞復(fù)數(shù)做主語(yǔ)時(shí),謂語(yǔ)要用單數(shù)形式。
如:A number of people are waiting to be interviewed.
The number of students in our class is 50.
10.在“one of+復(fù)數(shù)名詞+who/that/which”引導(dǎo)的定語(yǔ)從句中,從句中的動(dòng)詞應(yīng)該是復(fù)數(shù)形式。但如果the only來(lái)修飾one時(shí),從句的動(dòng)詞應(yīng)是單數(shù)形式。如:This is one of the most interesting stories that have been told.