but for引导虚拟语气的句子紧接着but for的部分是不是就是从句
题目
but for引导虚拟语气的句子紧接着but for的部分是不是就是从句
答案
看这样的例子:But for your help,I couldn't have finished it so successfully!=Without your help,I couldn't have finished it so successfully!=If it had not been for your help,I couldn't have finished it...
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已知函数f(x)=x,g(x)=alnx,a∈R.若曲线y=f(x)与曲线y=g(x)相交,且在交点处有相同的切线,求a的值和该切线方程.
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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