我想知道这句英语该怎么说啊

你想做一名*** ：You want to be a + 职业
你想做什么职业：What do you want to be?
我想成为一名话务员
问句：Do you want to be a telephonist?
肯定句：I want to be a telephonist.

you want to be a + 职业

which job do you want to do?
I want to be a telephonist.
do you want to be a telephonist?

you want to be a **?

which job do you want to do?
I want to be a telephonist.
do you want to be a telephonist?

do you want to be a 职业（teacher）？
which job do you want to ?
I want to be a telephonist.
do you want to be a telephonist?