Question

这道题应该选哪个呢？各位英语达人帮帮忙啊！

请各位英语达人帮帮忙啊!最好是说明为什么啊！小弟感激不尽啊！
--on ten years of obsercation and study,he announced that everyone dreams every night,whether they realise it or not.A.based B. basing C. been based D. having based

Answer 1

A be based on 的意思是建基础于...之上。在这是非谓语动词，所以用based就可以了。

Answer 2

我蒙的，首先看选项，四个有3个based，排除B，接着排A，过去式肯定不对，CD选一个，我会选D，过去分词用在前面看着就不爽。我英语语法很菜，不知道蒙的对不对

Answer 3

B，直接把整个句子倒过来看，he announced that everyone dreams every night basing on ten years of……………………，不要想得太复杂，其实很简单，呵呵

Answer 4

c