the house need to be painted.这里写成need being painted的话哪里不对?
题目
the house need to be painted.这里写成need being painted的话哪里不对?
答案
need doing = need to be done
I need to mend my bike. My bike needs mending
你可以改写成:The house needs painting(主动表被动)
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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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