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jjjjj(倒装)

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____that all mountain roads were closed A So dangerous did the weather become B So became eht dangerous weather C SO dangerous became the weather 请解释SO引导的倒装句用法,并举例说明
jjjjj(倒装)
解题思路: so+形容词或副词放在句首,表示程度,要部分倒装。
解题过程:
正确答案是A .
本题考察的是倒装。
本题so+形容词或副词放在句首,表示程度,要部分倒装(部分倒装即指将助动词或系动词提到主语前面的倒装)。

知识点: “结果状语从句对应的so/such位于句首引起的倒装句”的基本用法
  当“so/such ... that ...”结构中的so, such连同它所直接修饰的成分共同位于句首表示强调时, 主句要进行倒装(that后面的结果状语从句不倒装)。例如:
So angry was he that he couldn’t speak. 他愤怒得一句话也说不出来。(so与作表语的形容词放于句首, 主句呈现全部倒装的形式)
So fast does he run that he is far ahead of others. 他跑得如此快, 以至于远远领先于其他人。(so与修饰谓语run的副词fast放于句首, 主句呈现部分倒装的形式)
To such an extent do the parents love their son that they have tried to satisfy every demand of his. 父母俩爱子爱到了如此程度, 以至于尽量满足他的任何要求。(to such放于句首, 主句呈现部分倒装的形式)
  [考题1] So difficult ____ it to work out the problem that I decided to ask Tom for advice. (2006广东)
  A. I did find B. did I find C. I have found D. have I found
  [答案] B
  [解析] so difficult放于句首要引起主句的倒装, 结果状语从句中的“I decided to ask Tom for advice”表明整句话是针对过去的(不强调与现在的关联), 不宜用现在完成时而应采用一般过去时, 因此本题应选B。
  [考题2] ____ homework did we have to do that we had no time to take a rest. (2006福建)
  A. So much B. Too much C. Too little D. So little
  [答案] A
  [解析] 结果状语从句中的“we had no time to take a rest”意味着休息时间很少, 应先排除选项C、 D, 又由于放于句首的表语too much不能引起倒装, 而且意思上也难以与全句融合, 所以进一步排除B。
最终答案:略