12.The monument was built in honor of the explorer who was believed __A___ the river.
题目
12.The monument was built in honor of the explorer who was believed __A___ the river.
A.to have discovered B.to have been discovered
C.to discover D.having been discovered
为什么要用完成时而不用过去范围内的事态
答案
答案是A
因为是先完成discover ,然后再被人们相信.相信believed是过去时,所以,discover 这个动作在 believed以前发生这就是过去的过去,就是过去完成时.
语法：be believed to have done done -----被相信已经 - -- -
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