用作定语
▲～+n.
Ade's reckless driving angered his father.艾德乱开车使他的父亲大为光火。
His accident is a case of reckless driving.他这次事故是莽撞开车的一个例子。
His reckless driving accounted for the car accident.他开车鲁莽是出车祸的原因。
The policeman chewed the driver up yesterday for reckless driving.那位司机昨天因为开车莽撞，被警察狠狠罚了一次。
用作表语
▲S+be+～
He is very reckless when he is drunk.他喝醉酒时非常鲁莽。
▲S+be+～+prep.-phrase
He thought she was too reckless at it.他觉得她对它太粗心大意了。
