Question

is this school____you visited last week? 可以用what 吗 为什么用the one that ......还有其

他的用法吗。如that 等
还有一道 is this company __-you paid a visit to the other day ? 可以用 what 吗 答案是the one

Answer 1

不可以用what，因为它不是一个关系代词，但可以说：
1. is this school__the one that __you visited last week? 用而This school is the one.这个主句这样写是成立的。
2.is this school__that__you visited last week?直接用关系代词that引导先行词this school的定语从句。
这道题： is this company __-you paid a visit to the other day ? 不可以用 what ，理由同上题。

追问

那么。。。。what=the one that。。。不是符合第二道题吗
万分感谢

追答

不能说what=the one that，因为what是“所....的事物”，you paid a visit to 中有了宾语a vist，而what也是做宾语的，这是不行的。you paid a visit to 这句中缺少的是介词to的宾语，这个宾语就是关系代词that。

Answer 2

把句子换成肯定句更容易看：
1.this is the school (that/which) you visited.
this school is the one (that/which) you visited.这两个句子分别school和the one是先行词，之后跟了定语从句修饰先行词school和the one，在定语从句中,物作宾语用that或which做引导词，或者先行词作宾语，引导词可省。
2.this school is what you visited.
what you visited是表语从句，what引导一个缺宾语的表语从句。在这个句子中，what等于the one that.
3.this company is the one (that/which)you paid a visited to.这个句子中，pay a visit to就等于动词visit, visit Tom, visit a school, visit a company，名词性从句中的what就等于定语从句中的sth that也就是你说的那个the one that只不过那个the one不要是人，要是物就行。