比较级句型中,"和……一样"用 as...as,"不如……"用 not as/so...as,中间都用形容词或副词原级。
顺口溜记忆
- 甲乙程度若相同,as...as 中间用原级
- 甲不如乙那么强,not so/as...as 来帮忙
- 否定句中 so、as 都可以,中间原级不能忘
- 倍数放在 as 前,三倍两倍表清楚
要点讲解
- 肯定句用 as...as:Tom is as tall as Jack. 汤姆和杰克一样高。
- 否定句用 not as/so...as:This room is not as big as that one. 这个房间不如那个大。
- 倍数 + as...as:This box is twice as heavy as that one. 这个箱子是那个的两倍重。
- as...as 中间必须用原级,不能用比较级。
例句解析
- She sings as well as her sister. 她唱歌和她姐姐一样好。
- My bike is not so new as yours. 我的自行车不如你的新。
- This river is three times as long as that one. 这条河是那条的三倍长。
易错提醒
- as...as 中间也可接名词:I have as many books as you. 我的书和你的一样多。(注意 many/much 的选择)