Yesterday evening at this time they were holding the birthday party,played very much happily
题目
Yesterday evening at this time they were holding the birthday party,played very much happily
这句话对吗?
昨天晚上这个时候他们在开生日晚会,玩得很开心 是这样表达的吗?
答案
at this time yesterday evening,they were celebrating the birthday party and had a good fun (enjoyed themselves very much)
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．
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