否定句：1) They didn't have to get up early yesterday.
2) I wasn't able to go to the meeting.
3)The teacher won't be able to come tonight.
一般疑問句：1) Did they have to get up early yesterday?
2) Were you able to go to the meeting?
3)Will the teacher be able to come tonight?
二
1 needn't
2 Can,can
3 must二，用can,may,must,can't,mustn't,needn't填空1)He was ill yesterday,so he____go to school. 2)Need I water these flowers every day? —Yes,you_____. 3)His little sister_____read or write yet.三，請寫出下列句子中need用作情態(tài)動詞還是行為動詞1)He needs to come early.（ ）2)We needn't hurry.（ ）3)Does he need to know this now?（ ）謝謝你回答我的問題1 can't 2 needn't 3 can't 1 行為動詞 2 情態(tài)動詞 3 行為動詞三，請寫出下列句子中need用作情態(tài)動詞還是行為動詞1)Need I write the letter now?（ ）2)You don't need to tell him the news.（ ） 99999999999個謝謝