作业帮The teacher advised his students that in the presence og the visiting mayor they should not say anything unless___A.being asked B.asked C.to be asked D.having been asked可是我想知道为什么?还有为什么不能选C?不是被动态吗...单词
来源：学生作业帮助网 编辑：作业帮 时间：2024/04/29 23:28:42
The teacher advised his students that in the presence og the visiting mayor they should not say anything unless___A.being asked B.asked C.to be asked D.having been asked可是我想知道为什么?还有为什么不能选C?不是被动态吗...单词
The teacher advised his students that in the presence og the visiting mayor they should not say anything unless___
A.being asked B.asked C.to be asked D.having been asked
可是我想知道为什么?还有为什么不能选C?不是被动态吗...
单词打错了,请把"og"改成"of"
为什么在这种情况下ask就做非谓语了?能通俗简单地说下,非谓语一般是用在什么情况下的吗?勿复制.
The teacher advised his students that in the presence og the visiting mayor they should not say anything unless___A.being asked B.asked C.to be asked D.having been asked可是我想知道为什么?还有为什么不能选C?不是被动态吗...单词
因为unless引导的从句中没有主语,谓语动词一定要同主语连用,所以没有主语就用非谓语动词了!一般是动词ing和动词ed形式,反正你记住：如果一个动词前没有主语,那么肯定就用非谓语形式了!
…
…
…
先给你举个例子：We will answer the questions if _.只要填出这个空你的问题就迎刃而解了,这里实际上是if引导的条件状语,后面可以用doing或done的非谓语形式,这是状语从句的规定,如果用to be done就多此一举了!同样unless引导的条件状语也是同样的道理.（刚刚看错题目了,对不起!）既然你是上海的,若还不懂,你可以参考复旦大学的那本语法实践指南中非谓语中的过去分词那部分内容.
A
asked就是被动的 啊
见过介词后面接to do的吗？
选B
完整的是unless they were asked
可以当做是省略了they were
这是非谓语么。。
我只知道这个时候asked = be asked
be可以不写的
to be 的话，应该有个将来时的概念
除非他们被问及 完整的应该是 unless they were asked 这里的 they were 可以省略 所以选B
这是非谓语asked表被动，unless asked 译为：除非被问到，完整的是unless they were asked ，因为逻辑主语一致，所以省略了they were.to be asked 表将来，被动。unless to be asked 译为：除非将被问到，而advised提醒我们这是过去，asked可表过去