2025-2026学年译林版七年级英语下册期中复习讲义 祈使句 & 建议句型 (Let's, Why not...)
译林版·七年级英语下册期中复习
——祈使句 & 建议句型 (Let's, Why not...)
祈使句用于表达命令、请求、劝告、警告、禁止等，建议句型用于提出自己的看法或提议。译林版七下Unit 4《Finding your way》和Unit 2《Neighbours》中均有涉及。期中考试常以单选、补全对话和句型转换形式考查。本讲系统梳理祈使句的构成与用法，以及常见建议句型的结构与回答，并通过分层练习确保学生灵活运用。
一、祈使句的基本用法
祈使句通常省略主语 you，以动词原形开头，表示命令、请求、建议或禁止。否定形式在动词原形前加 Don't。
类型 | 结构 | 例句 |
肯定祈使句 | 动词原形 + 其他. | Open the door, please. / Sit down. |
否定祈使句 | Don't + 动词原形 + 其他. | |
以Let's开头的祈使句 | Let's + 动词原形 + 其他. | |
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📌 注意：Let's 包括说话者和听话者双方；Let us 不包括听话者（请求对方允许）。初中阶段主要掌握 Let's 的用法。
二、祈使句的回答
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肯定祈使句的回答常用：OK. / All right. / Yes, I will. / Sure. 否定祈使句的回答常用：Sorry, I won't. / OK, I won't.
三、提建议的常用句型
向对方提出建议时，常用以下句型，语气礼貌且友好：
句型 | 结构 | 例句 | 肯定回答 |
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Let's开头的建议 | Let's + 动词原形. | Let's watch a movie. | Good idea. / That sounds great. |
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Why not / Why don't you | Why not + 动词原形? | Why not go swimming? | Good idea. / That's a good suggestion. | |
Shall we | Shall we + 动词原形? | Shall we have a picnic? | Yes, let's. / That's a great idea. | |
What/How about | What about + 名词/动名词? | What about going hiking? | That sounds nice. / I'd love to. |
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| How about + 名词/动名词? | coffee? |
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Would you like to | Would you like to + 动词原形? | Would you like to join us? | Yes, I'd love to. / I'd like to, but... | |
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四、祈使句与建议句型的转换
同一建议可以用不同句型表达。例如：
Let's play football. = Why not play football? = Shall we play football? = What about playing football?
五、易错点与温馨提示
常见错误：
• 误：Let's to go home. 正：Let's go home. (Let's后接动词原形)
• 误：Why not to have a rest? 正：Why not have a rest? (Why not后接动词原形)
• 误：What about go shopping? 正：What about going shopping? (about是介词，后接动名词)
• 误：Shall we to leave now? 正：Shall we leave now? (Shall we后接动词原形)
• 注意：回答建议时，肯定回答要热情，否定回答要委婉并说明理由。
典型例题（答案与题目已逐题核对）
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