where,强调句,强调句的回答强调所问的内容,如此句：
It is in the hotel where he stayed（that I find him）.
此句中“where he stayed”是定语从句；
【区别强调句】：
将句中的“it”“that”去掉看句子是否还成立,若成立则是强调句,否则不是强调句,如：
It was 7 o'clock when he got up（不是强调句）
It was at 7 o'clock that he got up（是强调句）
以上是我个人愚见,希望对你有用