名词性从句引导词技巧
连词-不当成分
what / whether / if “是否”
副词-不当成分
when / where / how / why / because / Whenever / wherever / however
代词-充当成分
what / which / who / whom / whose / Whatever / whichever / whoever / whomever / whichever
注意
- ever = "无论…" (例：whoever → "无论谁")
- 本技巧中充当状语的词也视为不当成分
- who 当主语，whom 当宾语
随堂练习 ✅5 ❌3
______ I saw in Shanghai impressed me deeply. ✅
answer
What ✅/Who
They lost their way in the forest, and ______ made matters worse was night began to fall. ✅
answer
what
The teachers don't make us wear a school uniform and we can wear ______ we like. ❌
answer 🤖
whatever ❌
what ✅
what 暗示 已知/有限范围 内的选择
whatever 强调 无限制/任何范围 的选择
上下文暗示范围：
前文提到 "不穿校服" → 暗示选择范围是 非校服的常规服装（如便服）
不是完全无限制的选择（比如不能穿泳装、奇装异服等）
I didn't hear ______ he had said because there was too much noise where I was sitting. ✅
answer
what
I don't know ______ he is at home or not. ✅
answer
whether
By boat is the only way to get here, which is ______ we arrived. ❌
answer 🤖
why ❌
how ✅
经典对比案例
✅ This is how we escaped.（描述逃脱的具体方法）
✅ This is why we escaped.（解释逃脱的原因，如危险环境）
She asked me ______ I had returned the books to the library, and I admitted that I hadn't. ❌
answer 🤖
if ❌
whether ✅
三、可用 if 的宽松场景
1️⃣ 单纯传递疑问，无对立暗示
✅ She asked if I had a pen.（不暗示「有」或「没有」的对立，仅询问事实）
2️⃣ 口语化表达
✅ Do you know if the store is open?（日常对话中 if 更自然）
I saw a marathon on TV and made up my mind that was ______ I wanted to do. ✅
answer
what