这两句意思是一样的.第一句live 是不及物动词不缺失成分,所以用关系副词where .第二句,live in 后缺失宾语,所以用关系代词that 充当宾语.其实that 还可以用which ,正所谓：where 等于in which .(但没有in that 啊!不懂再问那意思可以换成The city which I live inis very quiet或The city in which I live is very quiet这样是吗