The background music in an assembly line is designed _____.
A.not being listened to B.being not listened to
C.not to be listened to D.to be not listened to
这道题是什么意思,该怎么理解呢?
The background music in an assembly line is designed not to be listened to. 流水线里的背景音乐不是供人欣赏的。
-----动词不定式的否定结构由not 或never 加动词不定式(短语)构成。