have not和have never有区别吗?have ever的否定形式是havenot ever还是have never?

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• have not和have never有区别吗?have ever的否定形式是havenot ever还是have never?
• 将I have ever gone to beijing.改为否定句是家never还是not
• I have never had 否定提前应该是什么?应该是Never have I had 还是 Never had I have?按理说应该是动词提前,所以应该是Never had I have,但我听到的却是Never have I had ,谁能从语法上解释一下吗?能举个例子就最好了.感谢两位回答，Easy5555说得很好，记句子是个好办法，但现在我就是记住句子了想再温习下语法，现在听的多语法生疏了。刚翻一下，本来倒装就是要把助动词提前的，呵呵，关键这种用法口语中不多见。
• 1、Shanghai is the first city in the world___a high-speed traine, from the city to Pudong Airport.A to build B to be built Cto have been built Dto have built2、I haven't read___of his books,but judging from the oneI have read,he is a promising writer.A any B both C none D either3、The engineers made two big plans for the dam,___was never put in force.A one of which B every one of which第一题为什么不能用被动？完全否定和部分否定的区别？第三题如果是三个或三个以上，就可以选B了吗？ P.s 正确答案是 DBA
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• 将I have ever gone to beijing.改为否定句是家never还是not