不可以
after加時(shí)間段不能用于將來時(shí)
in +時(shí)間段：與將來時(shí)連用
after +時(shí)間段：與過去時(shí)連用
after +時(shí)間點(diǎn)：可與將來時(shí)連用
He will be back in two hours.
He came back after two hours.
He will be back after two o\'clock.
in+一段時(shí)間表示將來時(shí)
如:I\'ll come back in a week
in＋一段時(shí)間也可用于過去時(shí),意思是”．．．內(nèi)”
如:he came in two days.
而after＋一段時(shí)間通常只能用于過去時(shí),不能用于將來時(shí)
如：he came back after a week