Now day breaks,____the birds are singing.

题目

Now day breaks,____the birds are singing.
A.because B.for C.since D.as
并说一下这四个选项的区别,

答案

翻译：现在天亮了,伴随着小鸟的歌唱.A是因为……（后面跟从句）B也是由于,因为,但是因果关系没有A强烈,一般是从某现象推测出来的结果,才用B比如It must rained yesterday,for the street is wet.C同样是表示因果关系...