Unit 11 Conflict And Compromise Section Ⅲ Grammar —— 情态动词 课件(共48张)+学案(含答案)
日期:2026-02-13科目:英语类型:高中课件查看:97次大小:613325B来源:二一课件通
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Unit,课件,学案,48张,动词,情态
Section Ⅲ Grammar ——— 情态动词 ①When she was young, she could dance very well. ②Can/Could you help me? ③An experienced teacher can make mistakes. ④It could be weeks before we get a reply. ⑤This coat may be Peter’s. ⑥Since you are here already, you may as well stay here and enjoy yourself. ⑦May/Might I have a few words with your manager? ⑧They must be hungry after a long walk. ⑨If you must smoke, please go out. ⑩Shall we begin our lesson? Tell Jerry that he shall get a gift if he is nice. It’s strange that he should be late. Will/Would you go with me? He would get up early when he lived in the country. He will/would take you home. 【我的发现】 1.以上句子中,句①②③④为can/could的用法,可以表示“ ———。 2.句⑤⑥⑦为may/might的用法,可以表示“ ———等,may/might as well意为“ ———。 3.句⑧中must表示“ ———;句⑨中must意为“ ———。 4.句⑩中shall表示“ ———;句 中shall表示“ ———。 5.句 中should意为“ ———。 6.句 中will/would表示“ ———;句 中would表示“ ———;句 中will/would表示“ ———。 一、情态动词概述 1.情态动词的类型 (1)只作情态动词的有must, can (could), may (might), ought to。 (2)可作情态动词也可作实义动词的有need, dare。 (3)可作情态动词也可作助动词的有shall (should), will (would)。 (4)具有情态动词的某些特征的有be able to, have (has) to, used to, had better。 2.情态动词的特征 (1)在形式上,情态动词没有实义动词的各种变化,只有could, would, had to, might等几个过去式,其他情态动词,如must, ought to等的过去式皆与现在式同形。 (2)在意义上,大多数情态动词有多个意义,如can可以表达“能力”“可能”“许可”等。 (3)在用法上,情态动词与助动词一样,需后接动词原形,构成谓语动词。 二、情态动词的基本用法 1.表示能力(can/could/be able to) (1)can表示一般的能力,could泛指过去的能力。 Mary can speak 3 languages. 玛丽能说三门语言。 Tom could sing English songs at the age of 6. 汤姆6岁就能唱英文歌了。 (2)can在时态上只有现在时和过去时两种,而be able to则有更多的时态;be able to强调“通过努力有能力做到”,如果表示“某事已经成功做成”应用was/were able to,而不用could。 The fire spread through the building very quickly but everyone was able to get out. 这场大火很快蔓延到了整个大楼,但是每个人都逃出去了。 2.表示请求、允许、允诺(can/could/may/might/shall/will/would) (1)表示请求、允许时,在一般疑问句中could可以代替can,但could表示的语气更委婉,答语要用can。 —Can/Could I have a look at your new pen? —Yes, you can. ———我可以看一下你的新钢笔吗? ———可以。 (2)may表示请求、允许,意为“可以”。might表示的语气更委婉。might可以指过去的时间,也可指现在的时间。其疑问句的否定回答为I’m afraid not或mustn’t。 May (might) I ask for a photo of your baby? 我可以要一张你宝宝的照片吗? (3)shall 用于第一、三人称的疑问句,表示说话人征求对方的意见或向对方请示。 Shall I/he go to see you? 我/他去看你,好吗? (4)shall用于第二、三人称的陈述句,表示说话者的意志,用来表示说话者给对方的命令、指示、允诺。此 ... ...