to become a teacher in a middle school ,it is necessay to go to c_英语解答

to become a teacher in a middle school ,it is necessay to go to college
为什么用to become,不用becoming

人气：163 ℃　时间：2019-12-22 22:35:00

解答

因为成为老师这件事还没有发生,所以用to do,to do有表示将来的意思,动词的ing形式有表示现在正在进行的意思,所以不能用becoming