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never的用法
1. never主要与肯定动词连用而不与否定动词连用。一般情况下它意为“从未有过”：
Some people are never satisfied. 有些人从不满足。
I was never very good at maths. 我在数学方面从来就不很好。
A clever politician never promises too much. 聪明的政治家从不过多地许诺。
Have you met Marilyn. I’ve never met her. 你见到过玛里琳吗? 我从未见到过她。
2. never+肯定动词有时可以替代一个普通的否定动词：
I waited but he never turned up. 我等着，可他根本没有来。
3. never+疑问动词可表示说话人对于未能做到某事而感到惊讶：
Has he never been to Japan? I’m surprised, because his wife is Japanese. 他从没去过日本吗?我感到很惊讶，因为他妻子是日本人。
1. never before 意思是“以前从未有过”
例如：He had never before seen the work of that enigmatic master
以前他从没有看到过这位迷一般大师的作品.
2. never before 至于句首,句子倒装
如，Never before had she written so many complaints.
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