英语中表示“当.的时候."的词,句型有哪些?
题目
英语中表示“当.的时候."的词,句型有哪些?
答案
examples:when she came home,I was doing my homework she came home while I was doing my homeworkshe came home as I was doing my homeworkshe came home during the time I was doing my homework
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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