in;within;over+段时间有什么区别啊

in;within;over+段时间有什么区别啊 in和over,在表示时间上有什么区别? within和in有什么区别 within 和in有什么区别 in the last+段时间与in the past +段时间的意思与用法有什么不同? within the lifetime of everyone over 50.整句的意思,within在句中怎么译成中文解释?there has been a social revolution in European and particularly Western European society within the lifetime of everyone over 50. I lived in shanghai for over 20 years.望名师解析此句为什么用的是一般现在时态for 加段时间不应该是现在完成时吗？ in与within有什么区别there is a voice within my mind.中的within可不可以换成in啊?这两词有什么区别哒? in加段时间和for 加段时间用在什么时态?in加段时间听说用在将来时,那in those days呢?for加段时间和in加段时间有什么区别啊?真是糊涂了. within与in的区别! within和in怎么区别? during for over+时间的区别during for over+时间有什么区别 Yesterday we had a pleasant chat__a cup of tea.A.over B.during C.in D.within Which to choose?And why? FIRST DRAW A LINE __THE MIDDLE OF THE PAGE.THEN WRITE A WORD IN THE SPACE ABOVE THE LINE.A:ACROSSB:OVER C:BETWEEN D:WITHIN 英语翻译Also building slowly from within in Green Bay over the past decade was a downtown renaissance almost as improbable as,well,you know. Americans do much business_____lunch,but people here are different.They prefer to tell stories.A.over B.in C.within D.without within and in 区别是什么?详细介绍一下within 帮我看看这几句英语有没有错误第一句：Items are shipped from China using Airmail,reach most of the countries within 15 to 25 business days.If you want to take over in shorter time,you can choose EMS (reach in 5-10 days),we will supply