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. 情态动词
can(能,会), may(可以,可能,也许), must(必须,一定,应该) have to(必须,不得不) 1. 肯定句结构: 主语+can/may/must+动词原形+其它,例如: Imust go now. 2. 否定句结构: 在can/may/must后加not,例如: You mustn’t talk aloud in the library. 3. 一般疑问句结构: 把can/may/must提在主语前,例如: Must you go now?(Yes, I must. No, I needn’t.) May I open the window?(Yes, you may. No, you needn’t.) 十一. had better用法 had better+动词原形表示“最好做……”,变否定句时在had better后加not。例如: You had better catch a bus. You’d better not catch a bus. (You had= You’d ) 十二. 特殊疑问句的变换 对划线部分提问时,将划线部分去掉,剩下部分变一般疑问句语序。(对主语提问例外)例如: My name is Lily. What’s your name? The river is 500 kilometres. Hong long is the river? |
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沙发#
发布于:2019-12-07 23:33
谢谢。。。
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板凳#
发布于:2019-12-08 09:59
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