20分钟之后怎么用英语表达?in twenty minutes' time\in twenty minutes'\twenty minutes' later以上三种表达对吗?哪种对,哪种错?请英语大侠进来指正!

20分钟之后怎么用英语表达?in twenty minutes' time\in twenty minutes'\twenty minutes' later以上三种表达对吗?哪种对,哪种错?请英语大侠进来指正!
20分钟之后怎么用英语表达?
in twenty minutes' time\in twenty minutes'\twenty minutes' later
以上三种表达对吗?哪种对,哪种错?请英语大侠进来指正!

20分钟之后怎么用英语表达?in twenty minutes' time\in twenty minutes'\twenty minutes' later以上三种表达对吗?哪种对,哪种错?请英语大侠进来指正!
in twenty minutes' time--在20分钟的时间内
in twenty minutes---在20分钟内
twenty minutes' later--写法错误 应为 twenty minutes later 20分钟后
也可以说--after twenty minutes

in +段时间 表示不久的将来，其实意思就是在“...（时间）以后”
而after +段时间 也是相同的意思
after twenty minutes

应该是这样的：
in twenty minutes' time
in twenty minutes
twenty minutes later

in twenty minutes' time正确
in twenty minutes'\twenty minutes' later
错误应该是in twenty minutes\twenty minutes later

yes

twenty minutes later
可以