after之后,in和after后接时间词时意思有什么不同?

after后什么时候加ing,举个例子,谢谢啊?

介词后的动词都要用ing形式所以正确的是:He brushes his teeth after eating breakfast .=He brushes his teeth after you eat breakfast .You need to brush yourteeth after eating.=you need to brush yourteeth after 【you】eat .

in和after后接时间词时意思有什么不同?

in是在一段时间内.after是在某个时间后.它们不同意思的.

n+时间 表示在今后的多少时间之内.一般用在将来时,包括过去将来时,eg.I will finish this task in 3 days./ she said she would finish the task in 3 days.

after+时间 表示多少时间以后.不管是过去式现在时还是别的时态,只要符合句意都可以用.eg.i will finish this task after 3 days./i finished this task after 3 days.