He is only one of the boy students who speak English well.1.He is only one of the boy students who ( ) English well.A.speak B.speaksHe is the only one of the boy students who ( ) English wll.A.speak B.speaks

A
B
第一个only one指的是独生子的意思，译为他是那些英语讲的好的男学生中唯一的独生子．
第二个the only one是唯一的意思，译为他是那些男学生中唯一英语讲的好的．

1A
2B

a
b

1.A
2.B
因为有了the所以第二句指的是一个人

1.He is only one of the boy students who speak English well.'Who speak English' is a relative clause modifying its antecedent,students.2.He is the only one of the boy students who English well.这是一...

A这里的who指the boy students,所以动词不是单三.
B这里的who指He,所以动词是单三.