新概念英语第二册49-04
发布时间：2012-12-26 编辑：查字典英语网小编
He...follow me. C
A)don't need B)needn't to C)didn't need to D)needs
1.情态动词,无时态的人称
2.情态动词的疑问句的否定句都直接加not或提前
3.情态动词后加动词原形
needn't have done:过去不必做,但是做了 mustn't:不准 can't:不能 You don't...:事实
must苦恼等于have to表示必须,不等于have to时表示推测
1.对现在和将来加原形
2.对正在be doing
3.对过去have done
4.对过去正在have been doing
needn't＝don't have to
1.mustn't 2.mustn't 3.needn't 4.needn't 5.mustn't be bad for Smoking is bad for
you health
observe:仔细看
点击显示