变一般疑问句做否定和肯定回答
题目
变一般疑问句做否定和肯定回答
1.my father went to work yesterday?2.the dog can way its tail?3.I like tomatoes.4.She has long hair.
5.this is yellow dress 6.there are bananas
答案
1. Did your father go to work yesterday?
Yes, he did.
No, he didn't.
2. Can the dog sway its tail?
Yes, it can.
No, it can't.
3. Do you like tomatoes?
Yes, I do.
No, I don't.
4. Does she have long hair?
Yes, she has.
No, she hasn't.
5. Is this yellow dress?
Yes, it is.
No,it isn't.
6. Are there bananas?
Yes, there are.
No, there aern'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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