please, help me correct them.

He saw that a careless passerby hit his forehead "BY" the edge of the gate while "HE" was coming out from home.

2007-06-06 23:10:23 補充：
如果hkwaddle說要加ACCIDENT 因那是ACCIDENT. 中文好少甘講: 他剛想出門時看到有位路人不小心被門欄撞到前額, 如要加重那是意外, 中文那句的不小心已化表是意外, 否則....^他剛想出門時看到有位路人意外地不小心被門欄撞到前額^我會改為英文是:He saw a careless passerby hit his forehead on the edge of the gate while he was coming out from home.

He saw a careless passerby hitting his forehead on the edge of the gate when he was

leaving home.

無意，即係意外啦，咁加兩個字：by accident就得。
He saw that a careless passerby hit his forehead on the edge of the gate by accident while [was刪去] coming out from home.

2007-06-08 15:19:40 補充：
１．by accident 亦等於 by chance，即偶然
２．a careless passerby係形容個人，by accident係形容件事。如果你要用中文諗，應該係「一個不小心o既路人意外地．．．」，唔係「一個路人意外地不小心．．．」呢個clumsiness來自誤譯（a passerby carelessly... by accident），唔係我o既本意。

He sees a careless passerby will be when home is coming out, have not looked out , strike his forehead on the edge on the door.