____ the sun,nothing could live on the earth.A.Were it for B.Were it not forC.It were for D.If it is not for请说明原因,

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____ the sun,nothing could live on the earth.
A.Were it for B.Were it not for
C.It were for D.If it is not for
请说明原因,

B.Were it not for (与事实相对的假定)若不是…的话 固定用法

B. Were it not for
虚拟语气的用法

B 虚拟语气

B
虚拟语气。。倒装