初二英语改错练习题
题目
初二英语改错练习题
1.I wonder if Tom has been here.
2.Just at that moment,Sandy has made a strange machine.
3.I was playing the piano while the young couple came.
4.I have finished the homework before they came.
答案
1、If 改为whether
2、去has
3、came改为coming
4、have改为had
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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