ItouredZhangjiajie,Iwasdeeplyimpressedwithitsbeautifulscenery.AForthefirsttime.BAtfirstCItwasthefirsttime.DThefirsttime.这道题为何选D,不选A?请诸位帮忙解析,

Question

_____I toured Zhangjiajie,I was deeply impressed with its beautiful scenery.
A For the first time.B At first C It was the first time.D The first time.
这道题为何选D,不选A?请诸位帮忙解析,

Answer 1

The first time 可以引导时间状语从
For the first time 只能做状语 不能引导从句