黑龙江省大庆市第十四中学九年级英语下册《Module 5 Rules and suggestions-情态动词（B）》课件（外研版）.pptVIP

Revision of Entrance Exam to Senior High School（V） Modal Verds(B) Confusable points of Modal Verds can / be able to You‘ll be able to read the novel before long. Will you be able to come tonight? = Can you come tonight? 不久(before long)以后你就能读到这本小说。 2)今晚你能回来吗？（2） 在表示能力时,can与be able to的意义 差不多,有时两者可换用,但表示“经过努力、 设法做成某事“时,要用be able to。 be able to 有人称和更多时态的变化。 must / have to Confusable points of Modal Verds He had to drop out of school when he was ten years old. Must we hand in the compostions on time? Yes,you must. No,you needn’t./don’t have to. I have just called him,he must be at home. 他十岁的时候就不得不辍学了。 2) 我们一定要按时交作文吗？是的/不必。 3) 我刚给她打过电话，他一定在家。 must表示说话人的主观看法；而have to则表示客观需要。mustn‘t意为“不可以;不允许；dont have to意为不必。must还表示肯定的推测。 can / may / might / must Confusable points of Modal Verds 请问问那个人，他也许知道。 2) 灯亮着，他一定在书房。 3) 那人不可能是Tony，他这会在电影院。 4) 你会来Jeff的晚会吗？我不确定，我可能 会去看电影。 1.Please ask that man.He may know that. 2.The light is on,so he must be at study. 3.It can’t be Tony.He is at the cinema. 4.—Are you coming to Jeff’s party? —I’m not sure.I might go to the concert instead. can用于否定句和疑问句,相当于be impossible; may/might 相当于be not certain,用于肯定句, might可能性低于may; must相当于be certain,表有把握的揣测。 would / should / could / might Confusable points of Modal Verds would / should / could / might有时不表过去， 而是表委婉客气的语气。特别是在一般疑问句中。 Read through Language notes on 162 Must,have to