Unit 3 语法讲练-2022-2023学年八年级英语下册同步精品课堂（人教版）

人教版 八年级下册 语法讲练 Unit 3 Could you please clean your room? Pair work Let’s enjoy a video. 1. -Could I go out for dinner with my friends? - Sure, that should be OK. 2. - Could we get something to drink after the movie? - No, you can’t. You have a basketball game tomorrow. 3. Could I at least finish watching this show? 4. - Could you please take the dog for a walk? - OK, but I want to watch one show first. 5. -Could you please take out the rubbish? - Yes, sure. 6. Could you please help out with a few things? Have A L k make polite requests ask for permission Could for polite requests Could for permission Focus on 基本用法 How much do you know about could can 的过去时 礼貌的请求 提出建议 推测 I could run fast when I was a child. Could you help me? You could talk to your teacher now. He couldn’t be at the school then. 用于提出要求或请求 Grammar Focus “Could you please...?” 意为 “能请你……吗？”，否定形式为“Could you please not...?” 用于提出要求或请求。 肯定回答 Yes, sure./Of cousre. 是的，当然可以。 No problem. 没问题。 With pleasure. 乐意帮忙。 Sure./Of course./Certainly, I can. 当然可以。 eg：—Could you please lend me your bike? —Sure./Of course./Certainly, I can. Sorry, I can't. I have to... 对不起，我不能，我得…… Sorry, I'm going to ... 对不起，我将…… I'm afraid I can’t. I have to... 我恐怕不能。我得…… I'm afraid not. 恐怕不行。 eg：—Could you please go hiking with me tomorrow? —Sorry, I can't. I have to prepare for a competition. 否定回答 肯定回答及否定回答中,均不用could,而是要用can代替could。 Grammar Focus 用于征得许可 “Could I...?”意为“我能……吗？”，用于请求对方允许自己做某事。 eg：—Could I have a look at your new watch? —Of course you can. Here you are. —Mum, could I go out for a while? —I'm afraid you can't. You have to wash your clothes first. Yes, you can. / Of course you can. /Yes, please. Sorry, you can't. /I'm afraid you can't. /No, you mustn’t. 否定回答 肯定回答 Grammar Focus 三. could与can的区别 could与can都是情态动词，could是can的过去式。二者都可用于表示请求，但是用法稍有不同。 can表示一般性的请求，语气随便，常用于熟人之间或长辈对晚辈、上级对下级的场合； Can you tell us your story, Tony? 你能给我们讲讲你的故事吗，Tony？ could表示有礼貌的请求，语气委婉，