下面每个句子都有错误,请把它们找出来,并改正.
题目
下面每个句子都有错误,请把它们找出来,并改正.
(1)There isn't some bread on the plate.(2)Sally have got a toy dog.(3)How much is the shoes?(4)Don't read under the sun.(5)What can I did for you?
答案
(1)There isn't (some) bread on the plate.(any) (2)Sally (have) got a toy dog.(has) (3)How much (is) the shoes?(are) (4)Don't read (under) the sun.(in) (5)What can I (did) for you?(do)
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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