1.Mary has just left,but I didn't know she( ) until yesterday evening .(解释下为什么选B而不选C)
问题描述：
1.Mary has just left,but I didn't know she( ) until yesterday evening .(解释下为什么选B而不选C)
A will leave B was leaving C had left D has left
2.Have you sent for a doctor?
Sorry,I ( ) all about it(解释下为什么选C而不选A)
A had forgotten B will forget C forgot D forget
答
1.Mary刚刚离开,但是我直到昨天晚上才知道她将要离开.而不是“Mary刚刚离开,我直到昨天晚上才知道她离开了”.两个选项在语法上是没错,主要是语意.
2.别人问你有没有请医生,你的回答应该是基于现在时态.选A表过去的过去,将A改成为have forgotten就行.