No one but her parents ______ it.

Question

No one but her parents ______ it.
A. know B. knows C. is knowing d. are knowing
答案是B 为什么？

Answer 1

这个语法现象叫主谓一致
当主语有with， together with， like， except， but， no less than， as well as 等词组成的短语时，谓语动词与前面的主语部分一致。例如：

The teacher together with some students is visiting the factory. 教师和一些学生在参观工厂。

He as well as I wants to go boating.他和我想去划船。

所以你这题真正的主语是No one 是第三人称单数 所以要选B No one 才是真正的主语

http://www.for68.com/new/2006/12/li69438355319221600218620-0.htm

Answer 2

在这里，no one才是真正的主语，but her parents可以作为插入语来理解。当no one等不定代词作为主语时，谓语动词用单数，所以选B.

Answer 3

楼主请你这么看 No one (but her parents)
这样很显然就选B了吧
No one 才是真正的主语
后面的你可以看成定语或者同位语
你可以吧no one but作为一个固定的搭配记住

Answer 4

No one knows it but her parents.
这样写你就明白了.

Answer 5

明明是选A。