英语翻译
题目
英语翻译
1.上星期他回家了.2.昨天下午我在学校 3.他们昨晚做了作业 4.昨天他6点30分吃早饭 5.两天前他在家
答案
1. Last week he went home. 疑:Did he went home last week? 否:Last week he didn't go home. 2. I was at home yesterday afternoon. 疑:Were you at home yesterday afternoon? 否:I wasn't at home yesterday afternoon. 3.They did the homework last night. 疑:Did they do the homework last night? 否:They didn't do the homework last night. 4.He have the breakfast at 6:30 o'clock yesterday. 疑:Did he have the breakfast at 6:30 o'clock yesterday? 否:He didn't have the breakfast at 6:30 o'clock yesterday. 5.He was at home two days ago. 疑:Was he at home two days ago? 否:He wasn't at home two days ago.
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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