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一、a number of ,the number of
a number of 意思是“许多”,相当于a lot of ; the number of意思是“……的数目,……的数量”,当它作主语时,谓语动词用单数形式。
A number of students like playing computer games.
许多学生喜欢玩电脑游戏。
The number of the students is about 1500 in our school.
我们学校学生的人数大约是1500。
二、基数词变序数词助记歌
基变序,有规律,末尾加上th;一、二、三特殊记,八加h ,九去e ,ve要用f替;以e结尾变ie,后跟th莫忘记。要想表示几十几,只变个位就可以。
特殊变化:one—first ,two—second ,three—third ,five—fifth ,
nine—ninth ,twelve—twelfth ,forty—fortieth ,
eight-nine—eighty-ninth
三、概数(略数)表达法
数词+hundred/thousand/million/billion+名词复数
hundreds/thousands/millions/billions of+名词复数
例1
1. __people go swimming in summer in Dalian.
A、Thousands B、Thousand of C、Thousands of D、Thousand
2. __the students will take part in this English speech contest.
A. Two hundred of B. Two hundreds of C. Hundreds of D. Hundred of
四、of sb.与for sb.的区别
(1)of sb.“对于(某人)”,用于It is +adj. +of sb. to do sth.句型中,形容词为clever, kind, nice等描述人物性格特征的词,of后的人物与形容词有主表关系。
(2)for sb.“对于(某人)”,用于It is +adj. +for sb. to do sth.句型中, 形容词为easy, important等不描述人物性格特征的词,for后的人物与形容词没有主表关系。
五、不能同时出现在一个句子中的连词
1、because(因为),so(所以)不能同时出现在一个句子里,只能用其一。
Because he was tired, he couldn’t walk there.
=He was tired ,so he couldn’t walk there.
因为他累了,所以他不能走到那儿了。
2、(al)thouthg(虽然),but (但是)不能同时出现在一个句子里,只能用其一。但thouthg和yet可以同时出现在一个句子里(yet用作副词)
Thought he was tired, he still worked hard.
=He was tired, but he still worked hard.
虽然他很累,但他仍然努力工作。
小升初英语知识考点复习就为大家整理到这,