当前位置: > By the time you arrive this evening,____ for two hours....
题目
By the time you arrive this evening,____ for two hours.
A.I will study
B.I will have been studied
C.I had studied
D.I will have been studying
B和D区别在哪儿啊?

提问时间:2020-10-01

答案
选D
“by the time +将来时间”,用于将来完成时[will have done]或将来完成进行时[will have been doing],排除A,C
又由于B项是表示被动的,错误,故选D
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
版权所有 CopyRight © 2012-2019 超级试练试题库 All Rights Reserved.