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we are not clear about the degree()the accident will affect

来源:学生作业帮 编辑:百度作业网作业帮 分类:英语作业 时间:2024/06/13 18:16:13
we are not clear about the degree()the accident will affect us.
A.by which
B to which
C for which
D.on which
选B为什么不选D呢,还有请问什么时候需要在现行词前面加介词啊!谢谢
we are not clear about the degree()the accident will affect
which这里是代指degree
to degree到...的程度
至于要不要加介词,关键在于它在从句中充当的成分
这里的从句是
the accident will affect us to degree.