英语语法:虚拟语气I didn't know his telephone number.____ it,I ____ then.C.If I knew; would ring him upD.Had I known; would have rung him up请问C错在哪?是因为那个then吗?then在这里是作时间状语吗?
问题描述:
英语语法:虚拟语气I didn't know his telephone number.____ it,I ____ then.
C.If I knew; would ring him up
D.Had I known; would have rung him up
请问C错在哪?是因为那个then吗?then在这里是作时间状语吗?
答