Is this museum what you visited?为什么是表语从句?如果遇到这个的句子怎么分析?

what part of the museum is this? Is this museum ( )they visited last month?填 the one ,填 what --- is boring to visit the museum.A.It B.That C.This D.What is this museum ---you visited yesterday beautiful 【选择】28.Is this museum（ ）you visited last week?（ which / that / what / who）这道题选什么.理由是. Is this museum what you visited?为什么是表语从句?如果遇到这个的句子怎么分析? 请问Is this museum 和Is this the museum 有什么区别? 关于定语从句几道题is thsi museum ( )they visited yesterday?is this the museum( )they visited yesterday?is this museum ( )they stayed yesterday?is this the museum ( )they visited yesterday?is this museum( )you visited yesterday?it was the mus he is going to visit the museum this saturday?is going to visit the museum 提问 特殊疑问句改成陈述句（间接引语）Whose is this apple?Whose apple is this?Which is the way to the museum?What is his name?What's the matter?分别改为用He asks ...间接引语 is this museum ___ we visited last yearthatwhich the onewhen Is this museum the one they visited yesterday? Is this museum that you visited the other day? This is the museum where I once visited改错 This is what I what What is this? 翻译what is this what is this?