・do nothing but do〜

What is the part of speech of "but"?
(ex) She do nothing but complain. They do nothing but cry.

Question

・do nothing but do〜

What is the part of speech of "but"?
(ex) She do nothing but complain. They do nothing but cry.

Answer

In this context, but = except.
"But" is a conjunction.

Answer

For these 2 examples:

"nothing but X" means that "X" is the only thing that they do... or, more likely, it means that they do it a lot!

If Steve does "nothing but talk".... it means that he talks a lot.
If Becky does "nothing but sing"... It means that she is singing all the time.

Answer

Hello,Mr Keith!
It is important for English education at high school in Japan（；＿；）

Answer

Why do you think it's important to know the names of everything?  I don't think it helps.