问题补充:
---Can you tell me whom the book in April, ?
---Sorry, I don’t know.
A. was written by
B. was written
C. is written
D. is written by
答案:
(答案→)A. was written by
B. was written
C. is written
D. is written by
解析:句意:你能告诉我这本书是谁在四月写的吗?对不起,我不知道。动作的承受者作主语,用被动语态。其结构是,主语+be+done.为了说明动作是由谁做的,经常在句末加by sb.根据该句是过去时态,故选A。