導語：關係副詞 where 主要用於修飾表示地點的名詞，同時它在定語從句中用作地點狀語。下面小編講解定語從句的引導詞where，歡迎參考。
where 爲副詞，表示地點。在句子中等同於介詞加上表示地點的名詞的`功能。用where引導從句，修飾表示地點的名詞，where之後要加上主謂賓完整的陳述語序。
如：
Do you remember the place where we first met each other?
Do you remember the place at which we first met each other?
你記得我們第一次相遇的地方嗎？
The park where we had picnic last weekend is so fascinating.
The park at which we had picnic last weekend is so fascinating.
上週咱們野炊的公園很美。
I can hardly forget the cafe where we went for the first time.
I can hardly forget the cafe to which we went for the first time.(不常用)
我很難忘記咱們第一次去的咖啡館。
大家可以發現，where前不加介詞，這是因爲where本身是一個副詞，表示地點，前面不加介詞。where引導的定語從句修飾句子中所有的名詞成分，可以是主語，賓語或者表語。
口語示範：
那個曾經草木繁盛的地方已經變成了荒漠。
The place where the trees and grasses were dense and flourishing has now become a desert.
美國是一個不同文化和風俗交匯的國家。
America is a country where the diverse cultures and customs join.
寫作示範：
相比網絡閱讀，圖書館不僅是一個可以讓人集中精力看書的地方，也是一個人們可以參加學術研討會或者一些講座的綜合場所，所以，它們值得我們去維護。
Compared with on-line reading, library is not just a place where people can get concentrated on reading but a complex where people can attend some academic seminars or , it is worth our maintenance.
