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  • within和in的区别

    in:过……后(未来时间)
    注意
    如果用于过去时,用after +时间.
    She went to Nanjing last May,and she came back after a month.
    去年五月她去了南京,一个月之后她又回来了.
    大多用在将来时(一般将来时和过去将来时).
    in an hour 一小时之后
    in a week or so 一个多星期之后
    He will be back in five hours.他五小时之后回来.



    They said they would arrive here in a week.他们说他们一周后到达.

    within:不超过……的范围
    比较
    within和in with in强调在……时间之内,没有时态的限制.
    in是以现在为基准,in an hour是指从现在起1小时之后,所以一般只用于将来时.
    within 3 hours 3小时之内
    I must finish painting the cat within five minutes.我必须在五分钟之内画好这只猫.
    They worked hard.They finished the work
    within 2 days at last.他们努力工作,结果终于他们在两天之内完成了这项工作.

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