八A Unit 4 Hands-on fun 第3课时 Grammar 语法解析1 祈使句 当我们向他人发出命令、提出要求或建议时,常使用祈使句。祈使句一般省略主语you,以动词原形开头。根据句子开头动词的不同,常把祈使句分为以下几种: Do型 肯定式 动原+其他. Put up your hand, please. 请举手。 Have a seat here.这边坐。 否定式 Don't+动原+其他. Don't play with fire. 不要玩火。 Be型 肯定式 Be+表语+其他. Be careful next time. 下次小心。 Be a good child!要做一个好孩子！ 否定式 Don't+be+表语+其他. Don't be late next time.下次不要迟到。 Don’t be late for school!上学不要迟到！ Let型 肯定式 Let+人代宾格+动原+其他. Let me help you carry the heavy box. Let me help you.让我来帮你。 否定式 ①Don't+let+人代宾格+动原+其他. Don't let him do that.不要让他做那件事。 ②Let+人代宾格+not+动原+其他. Let him not go there with his father.让他不要和他父亲去那儿。 无动词 祈使句 This way,please!请这边走! No smoking!禁止抽烟! 反义 疑问句 ①祈使句，will you/won’t you ②Don’t开头，will you Open the window,will /won’t you Please open the door,will /won’t you Don’t be late again,will you Don’t run, will you ③Let us 不包括听话者在内，指示对听话者说，反义疑 问句的主语仍然为 you Let us play with snow,will you ④Let’s 是表示第一人称的祈使句，包含 说话者，所以 反义疑问句的主语为 we. Let's play with snow,shall we 注意：祈使句的答句常用一般将来时。--Don’t smoke here. --Sorry,I won’t. 语法解析2 should和had better 词汇 用法 例句 should 意为"应当,应该",表达责任、义务、劝告等,没有人称、数和时态的变化。 We should do what the teacher told us. 我们应该按老师说的去做。 had better 常简写为’d better 意为"最好",表示劝告、建议,是一固定词组，后面必须跟动原，没有人称和数的变化。其否定式为had better not do。 You'd better go to hospital at once.你最好立即去医院(看病)。 You'd better not forget to do your homework. 你最好别忘了做家庭作业。 中考真题速递 1．It’s raining outside. Take an umbrella, _____ you will get wet. A．and B．or C．so D．but 2. (2024 南通崇川期中)— Seeing is not always believing. We not judge(判断)anyone or anything if we don't know the full story.—I can't agree more. Put ourselves in others'shoes and then we can really understand them. A. would B. need C. should D. might 3. (2025 南通海门期末)— We are free this evening. Shall we go out for a walk — It's foggy. We'd better . Why a film at home A. not walk; not watch B. not to walk; not to watch C. not to walk; not watch D. not walk; not to watch 4.— Don't forget to wear the school uniform onMonday morning. . A. OK, I will B. No, I will C. OK, I won't D. Yes, I won't 5.—Halloween is coming, and I have to _____ lots of time making a pumpkin lantern for the party. —Plan your time well. And you be patient. A. take; had better B. cost; should C. spend; had better D. spend; can 6.—Don't be late next time, Nick.— . I will get up earlier. A. No, I won't B. Yes, I will C. Yes, I won't D. No, I will 7. (2025南通海门期末)—We are free this evening. Shall we go out for a walk —It's foggy. We'd better _____. Why _____ a film at home A. not walk; not watch B. no ... ...
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