重点讲解：
1. as...as
像…一样；
eg. I never went through a final exam that was as difficult as that one.
我从来没有碰到过像那次那么难的期末考试。
eg. There was no obvious reason why this could not be as good a film as the original.
找不出明显的理由来解释为什么这部片子拍得不如原先的好。
eg. The streets were as noisy as ever.
街上和往常一样喧闹。
2. mess up
搞砸；弄糟；弄脏；弄乱；
eg. He had messed up one career.
他把一份工作弄砸了。
eg. If I messed up, I would probably be fired.
要是我搞砸了，很可能会被炒鱿鱼。
eg. I hope they haven't messed up your video tapes.
我希望他们没把您的录像带弄乱。
