his good habit helps keep in good health对吗 不对请改一下
题目
his good habit helps keep in good health对吗 不对请改一下
答案
为你提供精确解答这里是不对的.涉及到两个句型的用法.help doing sth.help sb do sth.所以改为:his good habit helps keeping in good health.或者his good habit helps him keep in good health....
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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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