新目標(biāo)九年級Ｕｎｉｔｓ?。保保保舱`例析

李建高

1．蘇珊九歲時已經(jīng)自學(xué)了一門外語。

誤：By the time she was nine years old, Susan learned a foreign language all by herself.

正：By the time she was nine years old, Susan had learned a foreign language all by herself.