互换,?即:so+adj.+a/an+n.=such+a/an+adj.+n.。例如:?She is so good a teacher that we all love her.=She is such a good teacher that we all love her.她是一位好老师,我们都爱她。Р( )1.It was___difficult a question that___people could answer it. ?A.so,few B.so,a few ? C.such,few D.such,a fewРAР由此可知第一空应当使用so,故排除C和D;根据前一句子“问题如此难”可知“几乎没有人可以回答出来”,故正确答案为A项。a few表示肯定意义,意思为“一些”;few表示否定意义,意思是“很少,几乎没有”。Р注意:当that引导的结果状语从句为肯定句时,so ... that ...可以与be ... enough to do转换;当从句为否定句时,可以与too ... to ... 或be not ... enough to do转换。如:?1. David was so careless that he didn't find the mistakes in his test paper. (变为简单句)?=Davidwas_____careless____find the mistakes in his test paper.РAРtooРtoР2.A:The boy is so young that he can't look after himself.?B:The boy is not_______________to look after himself.(改写句子,使B句与A句意思相近)old enoughРOld enough
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