來源:網(wǎng)絡(luò)來源 作者:中考網(wǎng)整合 2021-11-22 22:00:42
中考網(wǎng)整理了關(guān)于2022年中考英語考點(diǎn):主語+情態(tài)動(dòng)詞,希望對(duì)同學(xué)們有所幫助,僅供參考。
主語+情態(tài)動(dòng)詞
含有情態(tài)動(dòng)詞的句子,變否定句時(shí), 只需在情態(tài)動(dòng)詞后加not.
【例】 I can dance. 否定句 I can not dance. 或 I can't dance.
They can speak English. 否定句 They can not speak English. 或They can't speak English.
【注意】He must be on the playground. He can not be on the playground. 析:當(dāng)must be用來表示推測,有“一定”的含義時(shí), 否定式要用can not.
You must say something at the mecting.否定句 You needn’t say anything at the mecting.
析:當(dāng)“must+行為動(dòng)詞”用來表示“必須”的含義時(shí),其否定式可用needn’t 或mustn't表示“不需要”,“不必”, 語氣委婉,must not表示“禁止”,“千萬別”語氣生硬。
You may come in now. You mustn't come in now.
析:may作為情態(tài)動(dòng)詞表示“可以”時(shí), 其否定式用must not,而不用may not.
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