Sallytookaphotoofherfriendswhilethey computergame...

來源：國語幫 3.16W

Sally took a photo of her friends while they computer games.

A. play B. are playing

C. have played D. were playing

D 句意：當他們在玩電腦遊戲時, 薩莉給她的朋友們拍了一張照片。這是含有while引導的時間狀語從句的主從複合句, 主句用了一般過去時, 時間狀語從句也應該用相應的過去時態。由句意可知“拍照”這個動作發生時, 另一個動作“玩電腦遊戲”正在進行, 故用過去進行時。