while引导的时间状语从句while I ______ the ticket,my wife _______ at the map.A.was buying; lookedB.bought; lookedC.was buying; was lookedD.bought; was lookingwhile引导的是时间段,后面应跟进行时态.按理来说该选A才对但是答案是D

问题描述:

while引导的时间状语从句
while I ______ the ticket,my wife _______ at the map.
A.was buying; looked
B.bought; looked
C.was buying; was looked
D.bought; was looking
while引导的是时间段,后面应跟进行时态.按理来说该选A才对
但是答案是D

D.当我在买票的时候,我的妻子正在看地图.
为什么是D呢.因为这种句型,一般都是强调后者的正在进行的动作.很多while引导的时间状语从句都是这样的模式.