clean one's car

clean one's car by one' car和in one‘s car的区别 in one's car为什么等于by car? 你知道nose one's car take a friend home in one's car iphone游戏IQ大作战what's my IQ攻略clean up the car Look!Mary's uncle ___(clean)his car.在草地上玩耍用____ the grass her car is very clean. 为什么是on one's bike（plane）,in one's car? There is one car.和There's a car.的区别是什么? 英语中by car=in one’s car,还是on one’s car.学校老师讲的是on,.做的一个完形填空是in 英语里有没有by one's car这个短语?和by car,in one's car有什么区别没有?