1.I have learned off that passage./I am reciting that passage.2.I have learned how to drive a car./I am learning to drive a car.3.I am teaching children to draw.4.The children have been taught to draw...4.The children have been taught to draw.5.Do you need me to bring anything along?第四句能否修改为，突出 我 已经教会了小朋友们画画， （他们已经学会了）I have finished to teach the children to draw.“我已经教会了小朋友们画画。”或者I have succeeded in teaching the children to draw.请问第五句有什么问题？