this machine doesn't work ,it hasn't worked fthis 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.

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/17 16:28:00

this machine doesn't work ,it hasn't worked fthis 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.
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.

this machine doesn't work ,it hasn't worked fthis 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.
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

这是一个规定的,机器工作只能用这个表达的

前半句用一般现在时陈述机械的现在的状态,表示机械坏了,不能工作了,后面半句现在用完成时表示,这个机械有几年都都没有工作了,有延续的概念,所以用完成时。
闹钟那些用一般现在时也是用来I陈述它们现在的状态。
望采纳!!!