题目
we had to 与we have to有什么区别
提问时间：2021-03-29
答案
we had to 是一般过去时；而we have to是一般现在时
如
They had to stay at home yesterday.
We have to do my homework every day.
如
They had to stay at home yesterday.
We have to do my homework every day.
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
奥巴马演讲不用看稿子.为什么中国领导演讲要看?
想找英语初三上学期的首字母填空练习……
英语翻译
最新试题
- 1定语从句中何时能用介词+which代替when,where,whose,why?
- 2烷烃能否使溴水褪色?它能否使液溴褪色?它能否使溴的四氯化碳溶液褪色?请分别说明理由,
- 31.Tina often goes to that clothes store with her mother.(改为同义句)
- 4乡下人家 第二段描写了乡下人家的一个生活场景,我们可以把它概括为（ ）,还有其他的五个生活场景分别为
- 5求导 y=(3次根号下x)* (1-cosx)
- 62a=3b2a=3b求4a²+12ab+9a²/2a²+5ab+3b²
- 7中亚主要的地形类型是什么
- 8Tom is his ( ) name A.first B.the first C.a first
- 9孔雀石加热分解或有什么物质?
- 10100MG换算成克是多少?
热门考点