Question

Almost all English prepositions ______ look like verbs.

1. A.
   when they turn into Chinese
2. B.
   when turning into Chinese
3. C.
   when they turned into Chinese
4. D.
   when turned into Chinese

Answer 1

D
本题考查分词作状语，逻辑主语为English prepositions，与turn into之间的关系为被动关系，故用过去分词，选D。