parents are taking good care of us and doing a lot for us in our daily life ,as ---- only child ,i s
题目
parents are taking good care of us and doing a lot for us in our daily life ,as ---- only child ,i should remember the word of thanksgiving and do something grateful for them
A an B the 选哪个 为什么
答案
选A
an和the都是惯词
一般前文没有提到的,不是特指某一个东西的,用a或an（there is an apple）
如果特指某一样东西,要用the（the apple is mine）
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
最新试题
热门考点