英语定语从句where,which,that用法Williamisproudofhisclasswheretheteachersarealltreatingthestudentslikefrends.这里的where为什么不能改为that?Itwashowtheyoungmanhadlearnedfiveforeignlanguagesthatattractedthe

　　英语定语从句where,which,that用法

　　Williamisproudofhisclasswheretheteachersarealltreatingthestudentslikefrends.

　　这里的where为什么不能改为that?

　　Itwashowtheyoungmanhadlearnedfiveforeignlanguagesthatattractedthestudents'interest.

　　这里的that为什么不能改为which?