to speak at the meeting?I don't know the professor to speak at the meeting now is from south.为什么要有一个to呢?这个事属于哪方面的语法问题啊？不好意思，我没见过to是可以修饰其他成分。还有，如果没有后面的 is from south 那么这个 to 是否就要省略呢？是否改为I don't know the professor who is speaking at the meeting now.（这个Who 是否正确？） to可以修饰句子么？我能在语法书的那一部分得到印证？
问题描述：
to speak at the meeting?
I don't know the professor to speak at the meeting now is from south.
为什么要有一个to呢?
这个事属于哪方面的语法问题啊？不好意思，我没见过to是可以修饰其他成分。
还有，如果没有后面的 is from south 那么这个 to 是否就要省略呢？
是否改为
I don't know the professor who is speaking at the meeting now.
（这个Who 是否正确？）
to可以修饰句子么？我能在语法书的那一部分得到印证？
答
I don't know the professor to speak at the meeting now is from south.
我不知道现在在会上讲话的教师是从南方来的。
to speak at the meeting now 是修饰professor.
因为
I don't know the professor is from south. 这是主句。
答
没有to读不通的 看看书上应该有
Who应该正确
答
TO起连接句子的意思,本身是没有什么意思的,用Who是对的,WHO是修饰主语Professor,