为什么不能用accidents be caused by.只能用accidents caused by.

请问It is caused by heavy traffic.句子中caused是什么词性?为什么不能用canus这个 交通 ,题08:many traffic jams are caused by traffic accidents wi 53.This law ________ the number of accidents caused by child be caused by同义短语 be connected with BE CAUSED BY 区别 problems caused by deforestation 词性转换：Car accidents have caused many _____during rush hours.( An error can be caused by attempting to divide by caused by和be cause by的区别 为什么只能用by the hand 不能用by the hand? 英语翻译Since chromosome damage may be caused by viral infection be caused from/by/for/to的区别