Question

I was to prove them wrong.

Answer 1

e to do表示将要做某事,是一般将来时

I was to prove them wrong 意思是“我将会去证明他们是错的”

I proved them wrong.意思是“我证明了他们是错的”

这两句的区别就是时态不同,第一句是过去将来时,第二句是一般过去式

prove是个及物动词,不用被动的情况下就一定要加上宾语

be to prove 可以用作谓语 且是主动语态

to be proved 是不定式,不能用作谓语 且是被动语态