a number of 与the number of用法与区别
a number of 与the number of用法与区别
下面是小编整理的一些关于a number of 与the number of用法和区别, 希望对大家有帮助。
英语中有两个相似的短语:a number of与the number of,二者的区别涉及到主谓一致的问题,它们修饰名词作主语时,谓语的数是不一样的。
①number of +名词复数
=a lot of =los of+名词复数
②a number of…意思是“一些,若干”(= some),后接可数名词复数或代词,谓语动词用复数形式。 还可以加入形容词表示数量大或小等(例如:a large/small number of…许多/少数……)。
A number of students of our school have read that magazine.
我们学校有很多学生都看过那本杂志。
A number of wild animals have been found in the forest.
森林里发现了很多野生动物。
③the number of…意思是“……的数字/数目”,介词of同其后名词构成介词短语,修饰the number.当它作主语时,谓语动词用单数。
例如: Many people took part in 10,000-metre race, but only a number of them kept on running to the end. 许多人参加了10000米跑,但只有一些人坚持跑到底。
A number of my friends think I should take a holiday. 我的一些朋友认为我应该休假。
The number of students in our school has grown from 1,000 to more than 1,500.
我们学校学生的数量从1000名增加到1500多名。
The number of wild animals has become less and less in recent years.
最近几年里,野生动物的数量逐渐减少。
1.the number of 表示“……的数量”, 跟复数名词连用作主语时,中心词是number, 谓语动词要用单数.例如:
The number of students in our class is50.我们班学生的数量是50人.
The number of pages in this book is 60.这本书有60页.
2. a number of 表示“许多”,相当于 many, 修饰可数名词复数.作主语时,谓语动词用复数.number 前可用large,small等修饰,以表示程度.例如:
A number of students are planting trees on the hill.许多学生在小山上植树.
【巩固练习】 the number of, a number of
1. sheep on the hill is 350.
2. sheep are eating grass on the hill.