have been
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have been和have done的区别
一个是现在完成时的主动语态，一个是现在完成时的被动语态。1、I have done my homework.2、My homework has been done.都可以解释为我已经做完作业了。但是2中作业是被做的，所以要用被动语态。 如何
一个是现在完成时的主动语态，一个是现在完成时的被动语态。1、I have done my homework.2、My homework has been done.都可以解释为我已经做完作业了。但是2中作业是被做的，所以要用被动语态。 如何
