Xiao Li does her homework after school every day.（改为否定句）
题目
Xiao Li does her homework after school every day.（改为否定句）
Xiao Li doesn‘t do her homework after school.为什么是doesn't do?
答案
doesn't使我们做否定句时加进去的,do是原句的行为动词does还原得来的
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