1）情態(tài)動詞的否定

情態(tài)動詞+not+動詞原形

He can't sing an English song.

他不能唱一首英文歌

He may not know her.

他可能不認識她

He mustn't go there.

他不準去那

He doesn't have to go there.

他不需要去那

They should not eat too much junk food.

他們不應該吃太多垃圾食品

2）使用情態(tài)動詞進行提問

情態(tài)動詞+主語+動詞原形

-Can he sing an English song?

他會唱一首英語歌嗎？

-Yes,he can./No,he can't.

-Must he go there?

他必須去那嗎？

-Yes,he must./No,he needn't.

-Does he have to go there?

他必須去那嗎？

-Yes,he does./No,he doesn't.

每日一句：Sow nothing, reap nothing. 春不播，秋不收