🎯 这节课你会学到
九类状语从句的连接词全家福 + 五个高频陷阱（主将从现、although/but、because/so、时间从句的时态、no sooner…than）。
📖 讲解
九类总表（认逻辑 → 选连词）
| 类别 | 连接词 | 例句 |
|---|---|---|
| 时间 | when / while / as / before / after / as soon as / until / since / the moment | I’ll call you as soon as I arrive. |
| 地点 | where / wherever | Sit where you like. |
| 原因 | because / since / as / now that | Now that everyone is here, let’s begin. |
| 目的 | so that / in order that（+can/may） | Speak louder so that everyone can hear. |
| 结果 | so…that / such…that | He ran so fast that no one caught him. |
| 条件 | if / unless（除非）/ as long as（只要） | Unless you hurry, you’ll be late. |
| 让步 | although / though / even if / while / however + adj | However hard it is, don’t give up. |
| 方式 | as / as if / as though | Do it as I told you. / He talks as if he knew everything. |
| 比较 | than / as…as | She is taller than I (am). |
五个高频陷阱（逐一排雷）
陷阱一：主将从现（条件/时间从句） 主句将来 → 从句用一般现在时：If it rains(❌ will rain) tomorrow, we’ll stay home. / I’ll tell him when he comes back.
陷阱二：although / but 不共存 中文「虽然…但是…」，英文二选一：Although he is old, he keeps learning.（删 but） 同理 because / so 不共存：Because it rained, we stayed home.（删 so）
陷阱三：until 的两个句型
- 肯定句：动作持续到…… I slept until noon.（一直睡到中午）
- 否定句 not…until：He didn’t get up until noon.（直到中午才起）
陷阱四：Hardly…when / No sooner…than（固定搭配 + 倒装）
Hardly had I sat down when the phone rang. No sooner had I sat down than the phone rang. （一……就……；had 提前倒装；when 配 hardly、than 配 no sooner——配对别错）
陷阱五：while 三义 while = 当…时（进行）/ 然而（对比）/ 虽然（让步）——按上下文判断：
While I was cooking, he was watching TV.（当…时） I like tea, while he likes coffee.（然而）
📝 随堂小练
- I won’t leave ____ you come back.（直到）
- ____ you don’t work hard, you will fail.（除非）
- It was ____ a moving film that we all cried.（such/so 选择）
- ____ ____ had he arrived ____ the meeting began.（一……就 + 倒装）
- 改错：Although he was tired, but he kept working.
答案（先自己写！）
- until（not…until 直到……才）
- Unless（除非：不努力就会挂）
- such（中心词 film 名词 → such；so + 形容词/副词）
- No sooner had he arrived than…（或 Hardly…when）
- 删 but（although 与 but 不共存）
➡️ 下一课预告
第 22 课：倒装与强调句——只有否定词开头才倒装吗？强调句怎么和主语从句区分？