unless后能用否定形式吗？

来源：百度知道 编辑：UC知道 时间：2024/09/23 03:20:32
一定要有引例啊！出处。谢谢！！

能。
http://www.eng.yabloko.ru/Forums/Main/posts/1505.html看看。

一般不能吧，见例句：Follow the green signs unless you have goods to declare/if you haven't any goods to declare.
We would have had a lovely holiday if it hadn't rained (不能用unless it had rained) every day.