I happened__with him when he was hit by a stone
题目
I happened__with him when he was hit by a stone
A:I was talking
B:talking
C:to talk
D:to be talking
请翻译,
答案
d. to be talking
happen to do something.
happen to be doing something
指恰好在做某事.这里用happened to be talking而不用happened to talk是因为强调当时他被石头打中的那一“时刻”我“正在”跟他讲话
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
最新试题
热门考点