扩pcr时引物的作用:请问这是强调句还是定语从句

我的理解是英语最重要的是语感，语法是后存在于语言的。
——where did you meet him？
——it was in the hotel （ ）he stayed last night.
如果填that，强调句的话，去掉it was 和that后 变成 he stayed in the hotel last night。就是说他昨天在hotel，强调他昨天在hotel.而原句是问你在哪遇到他，所以that不对。根据上下文，where did you meet him？你在哪遇到他？是在 hotel昨天他呆的那个。用where，上下文语义通顺。

第2个，It was the Athens 2004 olympic Games（ ）LIUxiang won a gold medal in the man’s race 。个人感觉用when不好。，因为the Athens 2004 olympic Games指的不是时间，是雅典2004奥运会。the Athens 是雅典（地名）所以用where。

定语从句
It was the Athens 2004 olympic Games（ ）LIUxiang won a gold medal in the man’s race 中the Athens 2004 olympic Games指的是地点，所以要用where来引导

where did you meet him？
——it was in the hotel （ ）he stayed last night.
也可以这么说 :
it was the hotel （in which）he stayed last night（注意前面的in要拿去）

是强调句,对地点的强调就是用where啊

下面的句子也是正确的
Athens 2004 olympic Games不能算是时间

是定语从句,如果是强调句,问句则没有意义.
在哪儿见面的?
是在他住的宾馆.
而不是强调他昨晚住的是宾馆而不是下水道.
另一句,运动会不是时间,而只在运动会中.

It was the Athens 2004 olympic Games（ ）LIUxiang won a gold medal in the man’s race .
用 Where强调the Athens 2004 olympic Games
用when表示‘突然’，不附题意。
it was in the hotel （ ）he stayed last night.
用where表示in the hotel ，整句话是he stayed in the hotel last night.

对，应该用where，我们分析一下，首句问“where did you meet him?”是想问他在‘哪儿’，再看答句，我们不难理解这句话的意思是说我是在他昨天晚上呆的那个宾馆和他见面的。所以全句是"It was in the hotel where he stayed last night (that I meeted him)”后面的省略了，where引导一个状语从句。
对于第二个问题，where相当于in which或on which