情景导入
同桌小丽愁眉苦脸："我和好朋友吵架了，怎么办？"你想给她建议，中文会说"你应该先道歉"或"你可以给她写张卡片"。英语里怎么说？You should say sorry first.（语气较肯定）You could write her a card.（委婉提供一个选项）
一句话记住核心：should 是"应该做"，语气较强；could 是"不妨做"，语气委婉。它们都是给建议的好帮手，后面统统接动词原形。
核心词汇
| 表达 | 意思 | 例句 |
|---|---|---|
| should / shouldn't | 应该 / 不应该 | You should get enough sleep. |
| could | 可以、不妨（委婉建议） | You could talk to your parents. |
| why don't you...? | 你为什么不……？ | Why don't you join a club? |
| what about + doing | ……怎么样？ | What about going for a walk? |
烦恼话题高频词：argue（争吵）、communicate（交流）、pressure（压力）、hang out（闲逛）、get on with（与……相处）、allow（允许）
句型与语法
情态动词三大特点：① 没有人称和数的变化（he should，不是 he shoulds）② 后接动词原形 ③ 否定直接加 not。
用法一：should 表建议或义务（应该）
- You should eat more vegetables.（你应该多吃蔬菜。）
- 否定：You shouldn't play computer games all day.（你不应该整天打游戏。）疑问：Should I tell the teacher? — Yes, you should. / No, you shouldn't.
用法二：could 表委婉建议（可以、不妨）
- You could give her a call.（你可以给她打个电话。）
- We could go to the park this weekend.（这周末我们不妨去公园。）
注意：表建议的 could 不是"过去式"含义！它只是语气比 can 更客气、更委婉。
用法三：could 表委婉请求与许可
- Could you please help me with my homework?（请你帮我做作业好吗？）Could I use your pen? — Sure. / Sorry, I'm using it.（应答不必重复 could）
听说训练
- A: I'm too tired every morning. — B: You should go to bed earlier.
- A: I argued with my best friend. — B: You could write him a letter to say sorry.
跟读强化：should 中的 l 不发音，读作 /ʃʊd/；could 同理读作 /kʊd/；shouldn't 的 /nt/ 收尾要轻。
辨析对比
① should vs could（都表建议，语气不同）
| should | could | |
|---|---|---|
| 语气 | 较肯定："我认为你应该这样做" | 委婉："这是一个选项，供你参考" |
| 例句 | You should say sorry. | You could call her, or you could write to her. |
② could 表"建议"vs could 表"过去的能力"
- You could ask the teacher for help.（表建议，指现在或将来）
- I could swim when I was six.（can 的过去式，表过去的能力——有过去时间背景 when I was six）
文化角
英语国家的人给建议时特别讲究"留余地"，很少直接命令别人：直接说 "Do it!" 会显得没礼貌，说 "You could try this." 或 "Maybe you should..." 就柔和得多。请别人帮忙时，"Could you...?" 比 "Can you...?" 更客气。学会用 could 说话，你的英语不仅正确，还很有教养。
易错点
- 情态动词后接 to do：You should to finish it first. ❌ → You should finish it first. ✅
- 三单加 s：He shoulds study harder. ❌ → He should study harder. ✅
- 双重情态动词连用：You should can do it. ❌ → You should be able to do it. ✅
中考真题
— I'm always nervous before exams. What should I do?
— You ______ take a deep breath and tell yourself "I can do it".
A. can't B. could C. mustn't D. need
✏️ 点击查看解答
答案：B
解析：问句 "What should I do?" 是典型的求建议句型，答句应当给出一条建议。A（不能）和 C（禁止）都是否定含义，与"深呼吸、鼓励自己"这条正面建议矛盾；D 作实义动词需要接 to（need to take），此处不合语法。could 表委婉建议"你可以……"，语气友善自然，故选 B。
考点
- 中考单选、情景交际高频考点，常以"求建议—给建议"对话形式命题；
- 三大命题点：① 情态动词后接动词原形 ② should/could 与 must/can't 等语气辨析 ③ Could you...? 委婉请求的应答方式；
- 写作加分：建议类作文中连用 "You should... / You could also... / Why don't you...?" 能让句式丰富、层次分明。
诵读 Read Aloud
Part 1 · 对话（分角色朗读）
A: I had a fight with my best friend. What should I do?
B: You should talk to her face to face. Good friends should share their feelings. If you're nervous, you could write her a note first, or invite her to play tennis after school. You shouldn't worry too much. Everything will be fine.
Part 2 · 短文：A Letter of Advice（体会建议信写法）
Dear Li Hua, I'm sorry to hear that you feel stressed these days. Here is my advice. First, you should get enough sleep, because a tired mind cannot work well. Second, you shouldn't spend too much time on your phone before bedtime. You could listen to soft music or read a book instead. You could also talk with your parents about your worries. They love you and they should know how you feel. I hope my advice helps. Yours, Wang Ming