I still don't know what()while I was away from home.a.had happenedb.happened.Beef noodles in Lanzhou taste the best in China and()a.are sold wellb.sell well这里不是应该用被动语态吗?
问题描述：
I still don't know what()while I was away from home.
a.had happened
b.happened
.
Beef noodles in Lanzhou taste the best in China and()
a.are sold well
b.sell well
这里不是应该用被动语态吗?
答
第一题while 表示的是同时发生。
had happened 表示的是在这之前发生。句中有while，所以选happened.
答
第一题,选b,因为while这个词说明应与后面半句时态一致,而且没有明显的“过去的过去”,不能用过去完成时.
第二题,这里不能用被动语态,这是sell这个词的一种用法,要记住哦!