请教一道英语语法题
问题描述：
请教一道英语语法题
last year,he became _____teacher and his friend turned ___doctor.
第一个空肯定是a 了,但是为什么第二个正确答案什么都不填呢?职业前不是要有冠词么?
答
became是系动词,相当于be动词
所以前半句可以理解成he was a teacher
turn后面加一个职务,或头衔就规定省去任何冠词.这种现象叫零冠词