my grandmother said that she (live) in the country
题目
my grandmother said that she (live) in the country
after she retired
答案
My grandmother said that she has lived in the country after she retired.
has lived 是因为从退休一直到现在一直居住在这个城市,应该用现在完成时.
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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