after waiting for two hours,i ________(know) i was at the wrong place.
题目
after waiting for two hours,i ________(know) i was at the wrong place.
用know的那种形式?
答案
用过去时knew,因为根据时态一致,后面有was,而且这两个动词都是在过去发生,所以用knew
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