until 与beforeJohn knocked at the door for nearly five minutes ____his wife opened it.A before B until选的是A,为什么B不对?
until 与beforeJohn knocked at the door for nearly five minutes ____his wife opened it.A before B until选的是A,为什么B不对?
until 与before
John knocked at the door for nearly five minutes ____his wife opened it.
A before B until
选的是A,为什么B不对?
until 与beforeJohn knocked at the door for nearly five minutes ____his wife opened it.A before B until选的是A,为什么B不对?
只能选A不能选B
相信为什么选A您已经明白
我说说为什么不能选until
until用于肯定句,主句的谓语动词必须是延续性动词,而主句中knock是非延续性动词,所以不能选B
条件语句
其实你翻译下就知道是A
在他妻子开门之前,John敲了5分钟的门感觉B也通,约翰敲了5分种的门直到他的妻子开门。not untiluntil也可以用于肯定句的