祈使句 Imperative
考试：📘 KET ✓ 📙 PET ✓ 📕 FCE·雅思 ✓ 分类：语态与语气 考试入口：KET语法清单 | PET语法清单 关联：五大基本句型 Five Sentence Patterns | 情态动词 Modal Verbs | 条件句 Conditionals | 间接引语 Reported Speech
核心规则（Grammar Core）
什么是祈使句？
祈使句是英语里最短的句子——它跳过主语，直接用动词原形开头，下达命令、提出请求、给出建议或发出警告：
Open the door. → 开门。（命令）
Please sit down. → 请坐。（请求）
Try the cake. → 尝尝蛋糕。（建议）
Don't touch that! → 别碰那个！（警告）
主语永远是隐藏的 you，但绝对不写出来。
五种基本句型
| 类型 | 公式 | 例句 |
|---|---|---|
| 肯定 | V原形 + … | Stand up. / Be quiet. |
| 否定 | Don’t + V原形 | Don’t run in the hallway. |
| 强调否定 | Never + V原形 | Never give up. |
| 礼貌请求 | Please + V原形 / V原形 + …, please | Please close the window. / Close the window, please. |
| 提议（我们一起） | Let’s + V原形 | Let’s play Minecraft after dinner. |
| 提议否定 | Let’s not + V原形 | Let’s not argue about this. |
Be 动词的祈使句用 Be（不是 are）：Be careful! / Be quiet! / Don’t be late!
礼貌等级阶梯（PET 必考）
同一个意思，礼貌程度可以从”命令”调到”恳求”——这是 PET Speaking 评分的核心：
| 等级 | 句式 | 例句 |
|---|---|---|
| 1 · 命令 | V原形 | Close the door. |
| 2 · 加 please | Please + V原形 | Please close the door. |
| 3 · 委婉 | Could you + V原形? | Could you close the door, please? |
| 4 · 最礼貌 | Would you mind + V-ing? | Would you mind closing the door? |
等级 1 在家可以，对老师/陌生人必须用 3-4 级。Aaron 在英国餐厅说 “Give me water” 会被认为粗鲁，“Could I have some water, please?” 才是正常社交。
Grammar Lens
祈使句出现的高频场景
| 场景 | 典型句式 |
|---|---|
| 学校规则 | Don’t eat in the library. Wear your uniform. |
| 菜谱步骤 | Cut the onions. Add the salt. Stir for 5 minutes. |
| 路标/标识 | Stop. Keep right. Do not enter. |
| 使用说明 | Press the button. Wait for the green light. |
| 建议/邀请 | Try this! Let’s go! Take care! |
| 警告/紧急 | Watch out! Run! Don’t move! |
| 励志/广告 | Just do it. Think different. Open happiness. |
对比辨析：祈使句 vs 情态动词建议
| 强度 | 句式 | 例句 |
|---|---|---|
| 必须 | Imperative: Do your homework. | 必做（命令） |
| 应该 | You should do your homework. | 应该（建议） |
| 可以 | You can do your homework now. | 允许 |
| 必须（更强） | You must do your homework. | 强制（情态动词） |
祈使句的语气最直接——比 should 强，但不一定比 must 强。语气取决于场景和语调。
与 if/when 连用 · “条件式祈使句”
祈使句常和 if/when 组合成实用指南句式（菜谱、说明书最爱）：
If you see a bear, don't run.（看见熊，不要跑）
When the alarm rings, leave the building.（警报响起时，离开建筑物）
If you need help, just ask.（需要帮助就来问）
参见 条件句 Conditionals 中 “Survival Guide” 段落——全篇祈使句 + if 从句。
间接引语中的祈使句 ⚠️（PET 必考）
祈使句变间接引语时，变成 tell / ask / order sb to do：
直接：The teacher said, "Open your books."
间接：The teacher **told** us **to open** our books.
直接：Mom said, "Don't play games before dinner."
间接：Mom **told** me **not to play** games before dinner.
直接："Please help me," he said.
间接：He **asked** me **to help** him.
😂 Grammar Joke
祈使句的家庭进化论
5 岁的 Aaron: Mom: “Eat your vegetables.” Aaron: 哭着吃。
8 岁的 Aaron: Mom: “Please eat your vegetables.” Aaron: 翻白眼吃。
12 岁的 Aaron: Mom: “Could you please eat your vegetables?” Aaron: “Could you please stop asking?”
15 岁的 Aaron: Mom: 默默把蔬菜端走。 Aaron: “Wait—don’t take them away. I’ll eat them.”
同样的诉求，礼貌等级随着 Aaron 长大不断升级。最后阶段 Aaron 自己用了祈使句的否定式（don’t take）——他终于学会主动表达了。
语法点：祈使句不是”粗鲁”的语态——它是英语直接性的体现。Mom 用 please、could you 升级礼貌；Aaron 用 don’t take 表达请求。语气藏在语调里，不在语法里。
🏛 语言文化光点
广告英语的祈使句帝国
打开任何品牌广告，你会发现祈使句几乎是唯一的句式：
Just do it. — Nike Think different. — Apple Open happiness. — Coca-Cola Have a break. — KitKat Taste the rainbow. — Skittles
为什么？因为祈使句直接命令读者行动——这正是广告的本质。中文广告”想做就做”完全不如 “Just do it” 有力，因为中文必须加主语”你”。
英语广告通过祈使句 + 极简词汇实现了一种独特的传染力——这是英语营销美学的核心。Aaron 学会写祈使句，就掌握了广告文案的基本武器。
菜谱英语也是祈使句的天堂：BBC Good Food 网站上的每个菜谱都是一连串祈使句——Heat the oil. Add the onions. Cook for 5 minutes. 这种”动作清单”风格是英语实用文体的标志。
例题精讲
例1（📘 KET · 基本祈使句）
A: I’m hungry. B: _____ (eat) an apple.
答案：Eat。直接用动词原形——这是祈使句最简形式。
例2（📘 KET · 否定祈使句）
Aaron, _____ (not / forget) your homework!
答案：don’t forget。Don’t + V 原形。
例3（📘 KET · Let’s 提议）
_____ (go) to the cinema tonight.
答案：Let’s go。提议”我们一起”用 Let’s。
例4（📙 PET · Be 动词祈使句）
The exam starts at 9. Please _____ (be) on time.
答案：be。Be 动词的祈使句用原形 be，不是 are/is。
例5（📙 PET · 礼貌升级）
把命令升级为礼貌请求： “Close the window.” → ”_____ you please _____ the window?”
答案：Could / close。Could you + V原形 + please = PET Speaking 必备礼貌句式。
例6（📙 PET · 间接引语转换）
The doctor said to Aaron, “Drink more water and don’t eat too much sugar.” → The doctor _____ Aaron _____ more water and _____ too much sugar.
答案：told / to drink / not to eat。祈使句变间接引语：told sb to do / not to do。
📖 Real English · 真实阅读
🔵 How to Make Egg Fried Rice
Crack two eggs into a bowl. Add a pinch of salt and whisk them lightly. Heat some oil in a pan. Wait until the pan is hot, then pour in the eggs. Stir quickly. Add the cold rice. Mix everything together. Cook for 3 minutes. Don’t forget to add some spring onions at the end. Taste it. If it’s too plain, add a little soy sauce. Don’t add too much—it will be too salty. Serve hot.
🔵 The Library Rules
Welcome to the school library. Please follow these rules:
- Be quiet. Don’t talk loudly.
- Turn off your phone before entering.
- Don’t eat or drink inside.
- Return books on time.
- Don’t write in the books.
- Ask the librarian if you need help.
- Treat the books gently—they belong to everyone.
Remember: a library is not just a place. It’s a promise. Keep it.
🔵 Dad’s Advice Before My First Solo Bus Trip
“Aaron, listen carefully. Don’t lose your bus card. Check the route number before you get on. Sit near the driver—it’s safer. Don’t talk to strangers, but be polite if someone talks to you. Stand up for elderly people. Don’t fall asleep on the bus. If you miss your stop, don’t panic—just get off at the next one and walk back. Call me if anything goes wrong. Remember: you’re 12 now. You can do this.”
I nodded. I didn’t say anything. But inside, I was already practicing one sentence I might need: “Excuse me, could you tell me where this bus is going?”
📝 中文注释（先读完英文再展开）
蛋炒饭做法：典型菜谱英语——Crack/Add/Whisk/Heat/Wait/Pour/Stir/Mix/Cook/Don’t forget/Taste/Add/Don’t add/Serve——14 个祈使句串成一道菜。这种”动作清单”风格是英语 instructions 体的核心。“Crack” 是 BBC Good Food / NYT Cooking 等英美菜谱网站对”打蛋”的标准动词，比 break 更地道。注意”Don’t add too much” 的否定提醒——避免 over-doing。
图书馆规则：规则文本最爱用祈使句（直接、清晰、无歧义）。Be quiet / Don’t talk / Turn off / Don’t eat / Return / Don’t write / Ask / Treat。结尾的 “Keep it” 用了 it 指代”承诺”——把规则文本拔高到一种诗意。
爸爸的公车叮嘱：祈使句最温柔的用法。Don’t lose / Check / Sit / Don’t talk / Be polite / Stand up / Don’t fall asleep / Don’t panic / Call / Remember——一连串命令背后是爱。最后一句 “Could you tell me…” 是 Aaron 心里默念的礼貌句式——祈使句的命令性在他心里转化成了对外礼貌请求的能力。这是语言成长的真实瞬间。
练习题
📘 KET 基础（5题）
- _____ (open) the window, please. It’s hot.
- _____ (not eat) so much chocolate before dinner.
- _____ (be) careful! The floor is wet.
- _____ (go) to the park together. (我们一起)
- Class, _____ (sit) down and _____ (take) out your books.
📙 PET Writing Part 1 · 句型转换（2题）
1. 祈使句 → 间接引语
The coach said, “Don’t be late for practice.” → The coach _____ us _____ late for practice.
参考答案：told / not to be
2. 命令 → 礼貌请求
“Open the window.” → ”_____ you please _____ the window?”
参考答案：Could / open
📙 PET 进阶写作（1题）
写一份 5 条规则的”我家电视游戏规则”——至少 2 条肯定祈使句 + 2 条否定祈使句 + 1 条 Let’s 提议。
🔗 节点关系
祈使句 ─────┬─ 肯定（V原形）
├─ 否定（Don't + V）
├─ 强否（Never + V）
├─ 礼貌（Please / Could you...）
├─ 提议（Let's / Let's not）
└─ Be 动词专用（Be + adj）
↓
与 if/when 组合 → 实用指南
↓
间接引语转换 → tell sb to do
↓
广告英语 / 菜谱英语 / 规则文本
双链跳转： 五大基本句型 Five Sentence Patterns | 情态动词 Modal Verbs | 条件句 Conditionals | 间接引语 Reported Speech | 一般现在时 Simple Present
R. S. Ang · K12 Notes · KET/PET, 2026