never dreamed of receiving a letter from a girl of her own age in Holland.句中receiving为什么加ing
题目
never dreamed of receiving a letter from a girl of her own age in Holland.句中receiving为什么加ing
答案
dream of doing sth.梦想到做某事.
介词of后加动名词.
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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