Question

He talks as if he ________ everything in the world．

1. A.
   knows
2. B.
   knew
3. C.
   had known
4. D.
   would have know

Answer 1

B
在as if/though后邊的方式狀語(yǔ)從句中，表示與現(xiàn)在事實(shí)相反或?qū)ΜF(xiàn)在的情況有所懷疑，動(dòng)詞用過(guò)去式；如果表示的是想象中的過(guò)去的動(dòng)作，用過(guò)去完成時(shí)。本句表示對(duì)現(xiàn)在的情況有所懷疑。