I need to go to school by bus是否=I need to go to school on a bus
题目
I need to go to school by bus是否=I need to go to school on a bus
答案
no, it is not the same.
I need to go to to school by bus - 我须要坐巴士回校.(使用一种交通工具)
i need to go to school on a bus - 我回校须要在一辆巴士上.(他在某种的交通工具上)
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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