twenty minute,twenty minutes,twenty minutes',与twenty-minute的

twenty minute,twenty minutes,twenty minutes',与twenty-minute的 twenty-minute-ride和twenty minutes'ride的区别 It's twenty minutes' walk 为什么不用twenty-minute? a twenty minutes' walk 与a twenty-minute walk哪种说法正确? twenty minutes' way 还是twenty minutes' road in twenty minutes` time 和in twenty minutes的区别 after twenty minutes 和in twenty minutes的区别 twenty minutes' time twenty minutes younger是什么意思? 【 急 】tack twenty minutes. a twenty-minute-walk or a twenty-minute's walk twenty -five minutes past eleven,意思是11点25分,对吗,minute加不加S