it is in the street where i first met him。这句是定语从句，street是先行词，在定语从句中做地点状语。这句话意在突出 “street” 这个词而如果把where换成that，这句话也对，就是楼主说的强调句。强调“in the street”两句都对，要根据具体的语境来判断，是想突出street还是强调地点。...
如果选where 那肯定还有前文。如： A: Where is the bookstore?B：it is in the street where i first met him. 否则， 应该是that 强调句 【希望帮助到你，若有疑问，可以追问~~~祝你学习进步，更上一层楼！(*^__^*)】...
我觉得这句话应该有上文。提问做某件事在哪里的。然后你回答It is in the street where.... I first met him in the street.可以用强调in the street，即，It was in the street that I first met him.( 注意是was ,不是is) ...
