Unit 3 第3课时 (Grammar Focus 4c)—单元同步语法精讲精练-【黄冈100分闯关】2022-2023学年八年级英语下册作业课件(人教新目标Go For It!)

第三课时　(Grammar Focus­4c) —单元同步语法精讲精练 英语 八年级下册 人教版 100分闯关 情态动词could的用法 情态动词could构成的句型用于向对方提出请求或征求对方的许可，表示委婉的语气。 ►用法 ①委婉地请求别人做某事时用：Could you (please) do sth.? 此句型的肯定答语用：Yes，sure./Yes，I can./Of course，I can./No problem./With pleasure.等。 否定答语用：Sorry，I can't.I have to.../Sorry，I'm going to.../I'm afraid I can't.I have to...等。总之，答语没有固定的形式，但要符合上下文的语境。 eg：—Could you please make your bed？请你整理一下你的床铺好吗？ —Yes，sure. 好的，当然可以。 2 ②委婉地请求别人允许自己做某事时用：Could I do sth.？此句型一般不在I后加please。 肯定答语用：Yes，you can./Yes，please.等。 否定答语用：Sorry，you can't./I'm afraid you can't.等。 eg：—Could I go to the movies？我可以去看电影吗？ —Yes，you can. 是的，你可以。 【注意】无论是Could you please...？还是Could I．..？句型，其答语无论是肯定回答还是否定回答，都不可以用could，而要用can，因为问句中的could不是过去式。 3 一、单项选择。 ( )1.—I called，but he was not in the office. —You ________ try his home number. A．must　　　　　　　B．could C．mustn't D．couldn't ( )2.—Could you do the dishes，Mike? —________．I'm busy with my homework. A．Sorry，I can't B．Certainly C．My pleasure D．No，thanks B A ( )3.—I left my dictionary at home.Could I use yours，Bob? —________．But you must give it back to me in an hour. A．Sorry，you can't B．Yes，sure C．You're welcome D．I hope not ( )4.—Mom，could I use your computer? —________．I'm going to work on it now. A．Sorry，you can't B．Take it easy C．It doesn't matter D．Never mind B A 二、按要求完成下列句子。每空一词。 5．We could go out for a walk after dinner.(改为一般疑问句) _______ you _______ out for a walk after dinner? 6．Could you please open the door？(改为否定句) Could you please ___ ____ the door? 7．Could you please take out the rubbish？(作肯定回答) _______，_______． 8．Could I play computer games，Mom？(作否定回答) _______，you _______． Could go not open Yes sure No can't 9．Could I use your English dictionary？(作肯定回答) ____ ________ ___ ______．Here you are. 10．Would you like to go shopping with me？(改为同义句) ______ ____ ______ go shopping with me？ No problem/Of course Could you please 一、根据句意，选择方框中的单词并用其适当形式填空。 1．Ple