Question

I looked at the young man, wondering ________ .

1. A.
   when had I seen him before
2. B.
   that where I had seen him before
3. C.
   if I saw him before
4. D.
   whether I had seen him before

Answer 1

D
注意這里的see應用過去完成時，wondering所帶的現(xiàn)在分詞短語作伴隨狀語，表示與謂語動詞looked同時發(fā)生的動作，因此wondering后帶的whether引導的賓語從句中see的動作應該在“過去的過去”，同時，從句應使用陳述語序。