1.WE were in zhe playground yesterday 2.I went to the park 3.last Sunday they bought a car two ge
题目
1.WE were in zhe playground yesterday 2.I went to the park 3.last Sunday they bought a car two ge
改为 否定句 疑问 并且回答 会的帮我下
答案
1.WE were in zhe playground yesterday.
We were not in the playground yesterday.
Were you in the playground yesterday?
Yes,we were./ No,we weren't.
2.I went to the park last Sunday.
I didn't go to the park last Sunday.
Did you go to the park last Sunday?
Yes,we did./No,we didn't.
3.They bought a car two days ago.
They didn't buy a car two days ago.
Did they buy a car two days ago?
Yes,they did ./ No,they didn't.
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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