你的句子改寫(xiě)成非強(qiáng)調(diào)句是：
Where she had been really made us all surprised.
所以,where是主語(yǔ)從句的連接詞,同時(shí)也是主語(yǔ)從句的地點(diǎn)狀語(yǔ).那been的表語(yǔ)呢？你好。你的句子里沒(méi)有表語(yǔ)，只有地點(diǎn)狀語(yǔ)where.--------如果把where具體化，就是：That she had been in the forest alone surprised us all.--------看見(jiàn)了嗎，in the forest 就是地點(diǎn)狀語(yǔ)。