B)由连接词连接的名词作主语
13)用and或both...and连接并列主语,谓语动词通常用复数形式。例如:Plastics and rubber never rot.Walking and riding are good exercises.
但是,并列主语如果指的是同一个人、同一事物或同一概念,谓语动词用单数形式,这时,and后面的名词没有冠词。例如:
Truth and honesty is the best policy.
The girl's teacher and friend is a young doctor.
Going to bed early and getting up early is a good habit.
A knife and fork is on the table.
14)当主语后面跟有as well as,as much as,no less than,along with,with,like,rather than,together with,but,except,besides,including,in addition to等引导的词组时,其谓语动词的单、复数按主语的单、复数而定。例如:
The teacher as well as the students was excited.
The problem with tobacco is that it contains a drug called nicotine.
15)以or,either...or,neither...nor,not only...but also等连接的名词(代词)作主语时,谓语动词的单复数应根据就近一致的原则。例如:
Tom or his brothers are waiting in the room.Either you or he is to go.
Neither you nor I nor anybody else knows anything about it.
C)代词作主语
16)名词型物主代词后的动词,既可以用单数,也可以用复数,这取决于它所代替的是单数还是复数。例如:
Ours(Our Party) is a GREat Party.Your shoes are black,mine(=my shoes) are brown.
17)such,the same起指示代词作用时,应根据其所指的内容来决定单、复数。例如:
Such is our plan. Such are his words.
18)关系代词who,that,which等在定语从句中作主语时,其谓语动词的数应与句中先行词的数一致。例如:
Those who want to go please sign your names here.
Some of the energy that is used by man comes from the sun.
Old stamps that have not been used are usually more expensive than used stamps.
19)疑问代词who,what,which作主语时,谓语动词可根据说话人所要表达的意思决定单复数。例如:
Who lives next door.It is Xiao Liu.
Who live next door.It is Zhang and Liu.
Which is (are) your book(s).
What produce(s) heat.
20)不定代词any,either,neither,none,all,some,more等作主语时,有以下两种情况:①单独用作主语时,视其在文中的意义,动词可用单数或复数形式。例如:
Now all has been changed.
All are present.
Let's begin the meeting.
either,neither单独作主语时,谓语通常用单数;
②后接of时,若of的宾语为不可数名词,动词当然用单数形式;若of的宾语为复数名词或代词,动词可以是单数,也可以是复数;在正式文体中,单数形式的动词更常用。例如:
Do(es) any of you know his address. None of them has(have) seen the film.
