unit1how
20xx新版九年级unit1how_can_we_become_good_learners课文重难点全面讲解练习
g. ② The watch needs___________(mend). 用于否定句或疑问句，是情态动词 (1)needn’t = don’t have to 没有必要 (2)need ,must 引导的一般疑问句，肯定会的用 must,否定回答用 needn’t — Must I go there now? — Yes， you must/No, you needn’t learners