概要: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. __people go swimming in summer in Dalian.A、Thousands B、Thousand of C、Thousands of D、Thousand2. __the students will take part in this English speech contest.A. Two hundred of B. Two hundreds of C. Hundreds of D. Hundr
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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. __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
1、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。
2、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)though(虽然),but (但是)不能同时出现在一个句子里,只能用其一。但though和yet可以同时出现在一个句子里(yet用作副词) Though 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。