I hope I haven't failed./I think I failed the French paper.前者是我希望,后者是我想,为什么时态会不同?

I hope I haven't failed./I think I failed the French paper.前者是我希望,后者是我想,为什么时态会不同?
I hope I haven't failed./I think I failed the French paper.
前者是我希望,后者是我想,为什么时态会不同?

I hope I haven't failed./I think I failed the French paper.前者是我希望,后者是我想,为什么时态会不同?
I hope I haven't failed.虽然现在希望没失败,但事实上已经失败了,只是希望没失败而已.所以是完成时.
I think I failed the French paper.我想我没通过法语论文.
法语论文通不通过还不知道,我只是认为没通过,所以是过去时.

前者是现在完成时 强调过去对现在的影响 而后者是一般过去式 陈述而已