英語三級每日口語(8.24)：I really screwed up this time

I really screwed up this time.
    這次我真的給弄糟了。
    今天的幾個句子是有關(guān)后悔的：
    1. I shouldn't have done it.
    我要是不那樣就好了。
    2. I really messed up.
    我給搞糟了。
    3. I should have known better.
    我早該弄清楚一些。