worn 和worn out,worn off有什么区别

这三个分别是wear in,wear out和wear off的过去式
wear in
磨合
例句:
A deep,round hole worn in rock by loose stones whirling in strong rapids or waterfalls.
锅穴,壶穴岩石上深深的圆洞,由于急流或瀑布的水涡带动疏松的石块旋转而成
Look at the holes that have been worn in this rug.
瞧瞧这块小地毯上磨出的洞.
wear out 穿破,磨损,(使)筋疲力尽,耗尽
例句:
After half an hour,his patience began to wear out.
不到半小时后,他开始有点忍耐不住了.
The machine will soon wear out.
这机器即将用坏.
wear off
磨损,逐渐消失
例句:
The plating is beginning to wear off in places.
镀层有的地方已经磨掉了.

worn的原型是wear；
wear in a big hat...穿着应用词组wear in...第二个是闲逛，散步的意思
wear out 穿破，用坏；耗尽 ；（使）疲乏，（使）耗尽 ；穿旧；使筋疲力尽
wear off 1. 磨掉, 磨损2. 逐渐减弱, 逐渐消失

worn in （wear in过去式） 穿戴什么
worn out adj 破旧的，疲惫的，破损的，
动词 （wear out过去式） 损坏
worn off adj￡v （wear off过去式） 磨掉，消失， 磨掉的，消失的

磨合 疲惫不堪的 磨灭