:()have your parents been abord?only once A,how ofen B,how many times

问题描述:

:()have your parents been abord?only once A,how ofen B,how many times

B
how often是对频率提问的,
如:
How often do you see your parents?
你多久看你母亲一次?
how many times是"多少次"

我有这个书 答案是A

how many times

选B
选A是问多久出国一次,B是问出过几次国
题目回答"只有一次",所以选第二个答案

only once 是只强调去过一次!那么提问的应该是问他父母去过几次国外?所以选择B how many times 而A是强调多长时间去一次是强调频率!