He is going to tell me all about his past.变否定句
题目
He is going to tell me all about his past.变否定句
There will be a table tennis match this evening.变一般疑问句
答案
He is going to tell me all about his past.变否定句:He is not going to tell me all about his past.
There will be a table tennis match this evening.变一般疑问句:Will there be a table tennis match this evening?
举一反三
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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