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英语里头主谓一致时什么意思?

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英语里头主谓一致时什么意思?
我英语不行,不然不懂
最好举几个例子
英语里头主谓一致时什么意思?
这是它的意思:
1) 语法形式上要一致,即用作主语的名词中心词和谓语动词在单、复数形式上一致 2) 意义上要一致,即主语和谓语的一致关系取决于主语的单、复数意义.3) 就近原则,即谓语动词的单复形式取决于最靠近它的词语,
1 并列结构作主语时谓语用复数
Reading and writing are very important.
注意:当主语由and连结时,如果它表示一个单一的概念,即指同一人或同一物时,谓语动词用单数,and 此时连接的两个词前只有一个冠词.
The iron and steel industry is very important to our life.The League secretary and monitor ___ asked to make a speech at the meeting.A.is B.was C.are D.were 答案B.注:先从时态上考虑.这是过去发生的事情应用过去时,先排除A.,C..本题易误选D,因为The League secretary and monitor 好象是两个人,但仔细辨别,monitor 前没有the,在英语中,当一人兼数职时只在第一个职务前加定冠词.后面的职务用and 相连.这样本题主语为一个人,所以应选B.
2 主谓一致中的靠近原则
当there be 句型的主语是一系列事物时,谓语应与最邻近的主语保持一致.There is a pen,a knife and several books on the desk..
There are twenty boy-students and twenty-three girl-students in the class.
总的来说,在由not only…but also…,not just…but…,or,either…or…,neither…nor…连接主语的句子中及在there be句型中,谓语动词的单复数按就近原则处理,即按与谓语动词最靠近的那个主语来确定谓语动词的单复数形式.如:
Not only John but also I am going to Shanghai next week.Either you or she is to go.Here is a pen,a few envelops and some paper for you.
3 谓语动词与前面的主语一致 当主语后面跟有with,together with,like,except,but,no less than,as well as 等词引起的短语时,谓语动词与前面的主语一致.The teacher together with some students is visiting the factory.He as well as I wants to go boating.
4 谓语需用单数
1) 代词each和由every,some,no,any等构成的复合代词作主语,或主语中含有each,every,谓语需用单数.
Each of us has a tape-recorder.
There is something wrong with my watch.
2) 当主语是一本书或一条格言时,谓语动词常用单数.The Arabian Night is a book known to lovers of English.
是英语爱好者熟悉的一本好书.
3) 表示金钱,时间.距离.价格或度量衡的复合名词作主语时,通常把这些名词看作一个整体,谓语一般用单数.(用复数也可,意思不变.) Three weeks was allowed for making the necessary preparations.Ten yuan is enough.
5 指代意义决定谓语的单复数 1) 在代词what,which,who,none,some,any,more,most,all等词的单复数由其指代的词的单复数决定.
All is right.(一切顺利.) All are present.(所有人都到齐了.)
2) 集体名词作主语时,谓语的数要根据主语的意思来决定.如family,audience,crew,crowd,class,company,committee等词后用复数形式时,意为这个集体中的各个成员,用单数时表示该个集体.
His family isn't very large.他家不是一个大家庭.
His family are music lovers.他的家人都是音乐爱好者.
但集合名词people,police,cattle,poultry(家禽).militia(民兵).vermin等在任何情况下都用复数形式.Are there any police around 3)有些名词,如variety,number,population,proportion,majority 等有时看作单数,有时看作复数.
A number of +名词复数+复数动词.
The number of +名词单数+单数动词.
A number of books have lent out.
The majority of the students like English.
6 与后接名词或代词保持一致
1) 用half of,part of,most of,a portion of 等词引起主语时,动词通常与of后面的名词,代词保持一致.
Most of his money is spent on books.
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