What fun it is to swim!How fun it is to swim!What a fun it is to swim!哪个句子正确?为什么?
题目
What fun it is to swim!How fun it is to swim!What a fun it is to swim!哪个句子正确?为什么?
fun 可以为名词 也可以为形容词吧!
What a shame!多么遗憾的一件事!为什么就不能是What a fun it is to swim!
答案
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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