The inspector asked the old lady to try to check what was missing by the next day.
这句话里,为什么用 what was missing? 而不用 what were missing ? 呢。一般小偷偷东西,都不止偷一件吧?
这个问题感觉有点Low, 不过自己有点绕在里面了,请老师指点,谢谢!
通常可以把指事物的 what 看作单数。