Question

I ____ Mr. White at that time, otherwise I wouldn’t have asked you for some information about him.

1. A.
   hadn’t known
2. B.
   don’t know
3. C.
   didn’t know
4. D.
   haven’t known

Answer 1

C
試題分析：考查時態：句意是：當時我不認得懷特先生，否則我就不會問你那么多關于他的有用信息了。說明是過去的事實，選C。
考點：考查時態
點評：時態的考查要根據上下文的語境進行，要根據句子中的關鍵詞來考查句子的時態。這題的關鍵詞是后面的wouldn’t have asked。