Ann is taller than her mother=
题目
Ann is taller than her mother=
Ann's mother is not ____ _____ ______Ann
答案
Ann's mother is not as tall as Ann
"Ann比她妈妈高"=="Ann的妈妈没有Ann高."
...is not as ...as...表示"...不及/没有...那么..."
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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