英语过去式用法
题目
英语过去式用法
英语was went did过去式用法
答案
was 是 is/am 的过去式 were是are的过去式 eg:I was watch TV last week.
We were watch TV last week.
went是go的过去式 eg：I went to the library.
did是do的过去式 eg:一般疑问句Did you play soccer yesterday?
否定句He didn't play soccer yesterday.
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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