答:it is+被強調部分that+從句用來強調某一部分，例如:
it is you who are wrong.(強調主語）
it's li hua that I met in the street.(強調賓語）
it's in the street that I met Li hua.(強調地點狀語）
it's at ten am that I woke up.
注意區別時間狀語從句與強調句:
it's at ten that I woke up.(強調時間）
it's ten when I woke up.(時間狀語）
