He talks as if he ________ everything in the world.
A.knowsB.knewC.had knownD.would have know在线课程B
在as if/though后边的方式状语从句中,表示与现在事实相反或对现在的情况有所怀疑,动词用过去式;如果表示的是想象中的过去的动作,用过去完成时。本句表示对现在的情况有所怀疑。
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