文档介绍：Finding the rule
主谓一致:是指句子的谓语动词与句子的主语在人称和数上保持一致,即如果句子的主语是单数,谓语动词用单数,如果主语是复数,则谓语动词用复数。
语法一致原则
意义一致原则
就近一致原则
三个原则:
:trousers, pants, shoes, socks, gloves, glasses, scissors作主语时,谓语动词用复数。若用pair等量词(piece, box, bottle)修饰名词时,谓语动词由量词的单复数形式决定。
1) Joe’s new trousers are black and white.
9) The glasses are not enough for him to see that object in the distance.
This pair of shoes _____ not mine. My shoes _____ in the box.
A. is , are B. are, is C. is , is D. are, are
2. A box of apples _____ falling off the truck.
A. is B. are C. am D. were
A
A
注意
2) The family go shopping at weekends together.
10) The family goes to the church every Sunday.
,family ,audience, group, team 等作主语时,谓语动词取决于集体名词在句中所表示的意义。当它们表示一个整体的概念时,通常被看作单数;而当它们表示组成整体的个体成员时,它们就是复数意义。
class______ ( be) not big.
class __________ (wait) for a new teacher now.
family _______(be) having lunch.
is
are waiting
are
我们的班
同学们
我的家人
3) To eat well is all he asks.
5) Playing tennis is very good exercise.
、动词不定式、从句作主语时,谓语动词用单数,但如果几个并列的动名词或不定式作主语,则谓语动词用复数。
1. Doing morning exercise ____ (be) good for your
eyes.
2. To help poor people ____ (be) our duty.
3. Listening, reading and speaking ____ (be)
important in studying English.
is
is
are
7) What caused the accident is a mystery.
① Persuading him to join us _______ (seem) really hard.
劝他加入我们看起来确实难。
② To go to bed early and to rise early ___ (be) a good habit.
早睡早起是一个好****惯。
③ Whatever was left _____ (be) taken away.
无论剩下了什么都被拿走了。
注意:what引导的主语从句,谓语动词一般用单数形式,若从句谓语或从句后的表语是复数形式,则谓语动词用复数形式。
What they need are 。
seems
is
was
4) Physics is an important subject in the middle school.
, physics, politics ,news ,the United States, the United Nations(联合国)等,其形式上虽以-s结尾,但表示的确是一门学科或一种事物,谓语动词只能用单数。
United States ____ (be) a developed country.
_____ (be) more interesting than maths, I think.
is
is
补充:
有些名词单复数形式相同,作主语时,谓语动
词由上下文决定。这类名词有means, species,
series, dee