1）情态动词的否定
情态动词+not+动词原形
He can't sing an English song.
他不能唱一首英文歌
He may not know her.
他可能不认识她
He mustn't go there.
他不准去那
He doesn't have to go there.
他不需要去那
They should not eat too much junk food.
他们不应该吃太多垃圾食品
2）使用情态动词进行提问
情态动词+主语+动词原形
-Can he sing an English song?
他会唱一首英语歌吗？
-Yes,he can./No,he can't.
-Must he go there?
他必须去那吗？
-Yes,he must./No,he needn't.
-Does he have to go there?
他必须去那吗？
-Yes,he does./No,he doesn't.
每日一句：Sow nothing, reap nothing. 春不播，秋不收
