問題補(bǔ)充：
單選題
_____ in the garden for an hour, the girl suddenly realized she had forgot locking her car door.A.ReadingB.To readC.Having readD.To have read
網(wǎng)友答案：
熱心網(wǎng)友 1樓
C解析read的邏輯主語是句子的主語the girl , 且兩者之間為主動(dòng)關(guān)系, 所以用ing形式作狀語。又根據(jù)for an hour可知，read已持續(xù)了一段時(shí)間，即read先于realized，故要用ing形式的完成式作狀語。
