- 试题详情及答案解析
- With his attention ________on the job,he didn't even look up when we came in.
A.to concentrate | B.concentrating |
C.concentrated | D.having concentrated |
- 答案:C
- 试题分析:句意:他把注意力都集中在工作上,当我们进来时都没有抬头。A.to concentrate不定式表示将来目的 B. concentrating 现在分词表示主动正在 C.concentrated 过去分词表示被动完成D. having concentrated现在分词的完成时态,concentrate one’s attention on “注意力集中,专注”,attention和concentrate是被动关系,故选C。
考点:考查非谓语动词的用法。