this is the museum which/in which/at whivh定从.this museum is that定从.

题目

this is the museum which/in which/at whivh定从.this museum is that定从.
is this the museum which/in which/at whivh定从.
is this museum that定从.
区别(先问一下这个答案有没有错)

答案

当然是有区别的.前者的主语是this ,系动词是is,the museum 是表语.Which引导的部分是修饰the museum这个表语的.后者this museum是主语 ,that 引导的部分是修饰this museum这个主语的,is 是系动词,其他像宾语或表语的...