情景导入
翻开小学的相册，你惊讶地发现：照片里的自己留着短发、戴着眼镜，还抱着最爱的玩具熊。妈妈笑着说："你小时候过去常常怕黑，晚上不敢关灯呢！"英语里描述这种"过去如此、现在不再"的变化，就用 used to：I used to be afraid of the dark.（我过去常常怕黑——现在不怕了。）
一句话记住核心：used to do = 过去常常做（现在不做了）。它自带"今昔对比"的味道，是讲"成长与变化"话题的必备句型。
核心词汇
| 词汇 | 意思 | 例句 |
|---|---|---|
| used to | 过去常常 | I used to play with toys. |
| be used to doing | 习惯于做 | I'm used to getting up early. |
| be used to do | 被用来做 | Wood is used to make paper. |
| shy | 害羞的 | He used to be shy. |
描述外貌变化：straight hair（直发）、curly hair（卷发）、glasses（眼镜）、tall（高的）、thin（瘦的）
句型与语法
used to 只有这一种形式，没有人称变化，后面接动词原形。
肯定句：
- I used to go to school by bike.（我过去常骑车上学。）She used to have long hair.（她过去留长发，现在剪短了。）
- used to 也可接 be 动词表过去的状态：I used to be quiet.（我过去很文静。）
否定句（两种形式都对，中考以 didn't use to 为主）：
- He didn't use to like vegetables.（他过去不爱吃蔬菜。）也可写作 He used not to like vegetables.
- 注意：didn't 后面 used 要去掉 d，写成 use to——这是拼写高频扣分点！
一般疑问句：
- Did you use to be afraid of the dark? — Yes, I did. / No, I didn't.
听说训练
- Did you use to wear glasses? — No, I didn't. But I do now.
- What did you use to do after school? — I used to watch cartoons, but now I play basketball.
跟读强化：used to 连读时 /d/ 和 /t/ 合并，整体读作 /ˈjuːstə/，不要把 used 的 d 单独重读。
辨析对比
① used to do vs be used to doing vs be used to do
| 结构 | 意思 | 例句 |
|---|---|---|
| used to do | 过去常常做（现在不做了） | I used to get up late. 我过去常晚起。 |
| be used to doing | 习惯于做（现在的习惯） | I am used to getting up early. 我习惯早起。 |
| be used to do | 被用来做（被动语态） | Bamboo is used to make chopsticks. 竹子被用来做筷子。 |
判断口诀：没 be 是"过去常常"；有 be 接 doing 是"习惯"；有 be 接 do 是"被用来"。
② used to vs would（都可表过去反复的动作）
- used to 既能接动作也能接状态：I used to be shy. ✅
- would 表过去习惯时只能接动作，不能接状态：I would be shy. ❌（中考以 used to 为主，它的适用面更广）
文化角
英文歌曲和电影台词里，used to 是"怀旧担当"：热门歌曲里常出现 "I used to know you so well."（我曾那么了解你。）毕业纪念册上常写 "We used to sit together in Grade Seven."（七年级时我们曾是同桌。）一个 used to，道尽物是人非——学会它，你就能读懂歌词里那份淡淡的怀旧情绪。
易错点
- used to 后接 doing：I used to playing football. ❌ → I used to play football. ✅
- 否定句忘记去 d：He didn't used to smoke. ❌ → He didn't use to smoke. ✅
- 三种结构混淆：想表达"习惯"却写成 My grandpa is used to take a walk after dinner. ❌ → My grandpa is used to taking a walk after dinner. ✅
中考真题
— Mr. Chen, our science teacher, ______ in a small village school, so he knows the students there very well.
— That's why he often encourages us to care about children in the countryside.
A. used to teach B. is used to teaching C. is used to teach D. used to teaching
✏️ 点击查看解答
答案：A
解析：由语境可知，陈老师过去曾在乡村小学任教（现在是"我们"的科学老师，说明已不在那里教书），表达"过去如此、现在不再"，应选 used to do。B 是"习惯于教书"，与语境不符；C 是"被用来教书"，主语是人，逻辑不通；D 结构错误——used to 后须接动词原形。
考点
- 中考单选、语法填空、单词拼写高频考点，几乎每年都会考查三种结构的辨析；
- 三大命题点：① used to do 与 be used to doing 的语义区别 ② 否定句/疑问句中 use to 的拼写 ③ used to 后接动词原形；
- 写作加分：写"成长变化"类作文时，用 "I used to be..., but now I..." 的今昔对比句式，结构清晰又出彩。
诵读 Read Aloud
Part 1 · 对话（分角色朗读）
A: Hi, Tina! I haven't seen you for years. You used to have short hair, but now it's long. And you used to wear glasses!
B: Haha, yes. I didn't use to like sports, either. But now I play tennis every day. And I used to be really quiet, but now I'm on the school radio show!
Part 2 · 短文：How I Have Changed（体会今昔对比写法）
My life has changed a lot in the past three years. I used to be short and thin, but now I'm tall and strong. I used to watch cartoons every evening, but now I'm used to reading books before bed. I didn't use to like vegetables, and my mom used to worry about my health. Now I eat well and exercise every day. I used to be afraid of speaking in front of my class. However, with my teacher's help, I have become confident. Growing up means changing, and I like the person I am becoming.