AS LONG AS 用法
题目
AS LONG AS 用法
答案
"as long as" =有三个用法:
1.During the time that (在这段时间):I'll stay as long as you need me.
2.Since (既然) :As long as you've offered,I accept.
3.On the condition that (条件是):I will cooperate as long as I am notified on time.
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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