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懂英语的麻烦教下倒装句1Never shall I do this again.2Not once has he fai

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懂英语的麻烦教下倒装句1Never shall I do this again.2Not once has he failed to fulfil his task
3Under no circumstances could we agree to such a principle(我的疑问是为什么这3个句子倒装把shall has could提前,我以为是把do did done 提前的,这些倒装时要提前的有什么区别吗).
懂英语的麻烦教下倒装句1Never shall I do this again.2Not once has he fai
这三个句子的原形是:
1.I shall never do this again.
2.He has failed not once to fulfil his task.
3.we could agree to such a principle under no circumstances.
像never, not, no都是含有否定意义的词.因此这类倒装属于部分倒装.
部分倒装是指“主语与助动词或情态动词的倒装”,因为这三个句子里,shall, has, could本身就是情态动词,有情态动词的句子,我们就不需要再添加do动词了.
给你举个添加do动词的例子:今天我只听到了一个很吓人的消息.Today I learned only a dreadly news. 变为倒装句:Only today did Ilearn a dreadful news.因为这个句子本身没有情态动词,所以要添加do动词.