She said she had been to the Great Wall twice.为什么用had been 不用 had gone?
题目
She said she had been to the Great Wall twice.为什么用had been 不用 had gone?
答案
have been to 表示：曾经去过某地.
have gone to 表示：已经去某地了.
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