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I hope his health will have improves by the time you come ba

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I hope his health will have improves by the time you come back next year.这句话有没有问题?
will have improves 之前的一段话:在以if,as long as,as soon as,after,before,in case,until,unless等连词以及具有连词作用的副词(immediately,the moment,directly)等引导的状语从句,一般用现在时代替将来时.强调延续性或动态时,可用完成时.这个正确吗,到底是个什么时态?
I hope his health will have improves by the time you come ba
will have improves形式错了
用将来完成时 will have improved (过去分词)
by the time you come back next year 这里用一般现在时表将来,正解!
by 要和完成时连用,主句指将来,当然用将来完成时 will have + 过去分词