题目
there be句型的变形 there exist或there appear 的过去式怎么表达
提问时间：2020-07-31
答案
there is
there are
there was
there were
there will be
there has been
there existed
there appeared
there are
there was
there were
there will be
there has been
there existed
there appeared
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
热门考点