GUIDE深度 · Deep dive
被动、定语从句、动名词/不定式
被动语态是 be + 过去分词，时态体现在 be 上。定语从句人用 who/whose，物用 which/that，地点用 where。动名词/不定式取决于前面的动词：enjoy doing，want to do。
被动/定语
The house was built in 2020.
The man who lives next door is a doctor.
The book which I bought is expensive.
动词搭配
enjoy/mind/avoid + doing。
want/decide/hope + to do。
常见问题
被动语态什么时候用？
动作执行者不重要/不知道时。
定语从句 that 和 which 区别？
限定性从句两者常可换；非限定性用 which。