Jack came home very late and knocked at the door for nearly ten minutes___his wife opened it.

问题描述:

Jack came home very late and knocked at the door for nearly ten minutes___his wife opened it.
A.when B.before C.until D.as 为什么选before而不选until,这是华师一附中09年的招生题,

until的话,肯定句中,主句谓语应该是 持续动词,knock是瞬间动词.until考试中很少考肯定句的(虽然可以用),但基本上都是not until 的形式出现.