下列每个句子都有一处错误,找出并改正.
题目
下列每个句子都有一处错误,找出并改正.
1.The old man said he had joined the army in 1965.
2.Mary said she did not heard from her old classmate since Sep.
3.Don't look at someone else paper,Jonh.You should do it by yourself.
4.In order to improve your English,you can try writing an English diary every day.
答案
1.The old man said he had been the army in 1965.
2.Mary said she had not heard from her old classmate since Sep.
3.Don't look at other's paper,Jonh.You should do it by yourself.
4.In order to improve your English,you should try writing an English diary every day.
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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