TEST SIX 30.he planned this experiment yesterday,but he didn’t find time to do so .TEST SIX 30.he planned this experiment yesterday,but he didn’t find time to do so .A)to have madeB)to makeC)makingD)to do
问题描述：
TEST SIX 30.he planned this experiment yesterday,but he didn’t find time to do so .
TEST SIX
30.he planned this experiment yesterday,but he didn’t find time to do so .
A)to have made
B)to make
C)making
D)to do
答
plan to+动词原形，所以是A或B，但时间是昨天，而且根据语境意思应该是他昨天本来计划完成这个实验，所以选A
答
首先plan to do是固定搭配
然后这件事是从yesterday开始plan的.是从过去开始到现在.并还会延续下去（这是完成时的定义）.所以用完成时.