1.The store which is downstairs is very fancy. 變化：which省略，動詞改being，being在省略 變成...
...到底 ex. What on earth are you doing?(你到底在做什麼?) downstairs: 樓下(的) decision: 決定 (名詞) succeed: 成功 (動詞)
就是那麼簡單 where are the kitchen and living room? 如果不用where的話 are the kitchen and living room downstairs?