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Jack has (加上been)regarded as a young hero in his town for his heroic deed.The other day,Jack was going home by bike as usual while (改为when)he heard a woman screaming for help.Then he was riding quickly towards(改为in) the direction of the voice.At the corner,he saw a woman stopping (改为stopped)by a man with a knife in her(改为his) hand.Without hesitation,Jack made a (改为an)immediate dive for the robber and controlled him by held(改为holding) him down against the ground.A few minutes later,three policeman(改为policemen) came and took the robber away.Slight(改为Slightly) wounded as he was in the left hand,but (去掉but)since then he has become well known as a young hero all over the town