英语选择题一题,大家帮忙（broadcast)GoodadsontheradioorTVofrenusewordspeopleattachpositivemeanings.A.arebroadcast;towhichB.broadcasting;forwhichC.whicharebroadcast;forwhichD.broadcast;towhich答案是D.我

Question

英语选择题一题,大家帮忙（broadcast)
Good ads ___ on the radio or TV ofren use words ___ people attach positive meanings.
A.are broadcast; to which
B.broadcasting; for which
C.which are broadcast; for which
D.broadcast; to which
答案是D.我不明白broadcast为什么不是被动,后面又为什么是TO WHICH?

Answer 1

这里broadcast是被动形式,它与原形是一样的.
to which people attach positive meanings是修饰words的.
而attach sth to sth 是习惯搭配,意思是“使与...相关联”.
把句子变换一下就看明白了：
people attach positive meanings to words.