in four years‘ time中的's 所有格还是固定用法?

The olympic games will be held in our country in four years' time. in four years 中 in 可换 after?1、……in four years 和……at four years ……after four years 有什么区别?2、表达 4年内 怎么表达呢? in four years‘ time中的's 所有格还是固定用法? The Olympic Games will be held in our country in four years' time.帮忙划分句子. The Olympic Games will be held in our country in four years' time.最后的years'是什么用法 the four years in college是单数还是复数,后跟is还是arethe four years in college is(are) a crucial time of growth. in five years' time The Olympic Games will be held in our country in four years' time.翻译并解释year后面为什么加's time, 英语中：Ben and jim are in zhe park ,jim is always four years I think Beth will be a pilot in four years对in four years提问 four years Four Years in ten years' time例句 in four months' 后面不加time The Olympic Games will be held in our country in four years' time.will 后为什么要加be?对对对,好像是将来时的被动语态 I can finish the work in?Four week's time.I can finish the work in?Four week's time.Four weeks timeFour-weeks time.Four week time when David is twice as old as he is now he will be four times as old as his daughter Jane will be in five years time. in three years'time.In three years一样吗 一个英语竞赛智力题When David is twice as old as he is now he will be four times as old as his daughter Jane will be in five years time.If in 1990,four years ago,he was four times as old as his daughter,in what year was she born?