The man sitting by the window is our teacher.要改过去时怎么改啊
题目
The man sitting by the window is our teacher.要改过去时怎么改啊
sitting by the window 现在分词作定语有无时态变化呢?改成从句The man who is sitting by the window is our teacher.如何改从句呢如果是过去式改哪边呢
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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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