1.Jim is drawing on the wall.（改为否定祈使句）
题目
1.Jim is drawing on the wall.（改为否定祈使句）
2.Some of the young men are runner.哪里错了
3.Look.They are running on the playground.What do they want do?哪里错了
答案
1.Don't draw on the wall please2.Some of the young men are runner.哪里错了runner要加S3.Look.They are running on the playground.What do they want do?哪里错了want 后面要加to
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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