如题所述
to be 相当于become, 成为,变成.
wants to be , be going to be ,
不定式要跟动词原形, 所以用to be
John wants to be a bus driver.
John is going to be bus driver.
成为司机 be a driver, 固定短语want
to do sth 想做某事, 所以约翰想当司机是 John wants to be a driver .
请采纳