Question

他上大學(xué)以后就沒(méi)學(xué)英語(yǔ)。

1. A.
   He hasn’t learned English since he was a college student．
2. B.
   He hasn’t learned English since he has been a college student．
3. C.
   He hasn’t learned English since he left college．
4. D.
   He hasn’t learned English since he has left college．

Answer 1

B
since后加短暫性動(dòng)詞的一般過(guò)去時(shí)或延續(xù)性動(dòng)詞的完成時(shí)。