1.This is the pencil whose point is broken.
這就是那個折了尖的鉛筆.
(whose 指物,在限定性定語從句中作定語)
2.He came back for the book which he had forgotten.他回來取他丟下的書.
（which指物,在限定性定語從句中作賓語,可以省略）
3.關(guān)系代詞which的先行詞可以是一個句子,例如：
He said he saw me there,which was a lie.
他說在那兒看到了我,純屬謊言