this machine doesn't work ,it hasn't worked f
问题描述:
this machine doesn't work ,it hasn't worked f
this machine doesn't work ,it hasn't worked for years.
这裏可不可以用 isn't working 为什麼求解释.
答
isn‘t working 说明 没运作 不在工作 hasn’t worked 表示 延续的 一直都没工作,好几年都这样 只有完成时才可以表述 这个意思