1. know-it-all万事通

Grace is always correcting other people. She thinks she’s a know-it-all.

格雷斯总是在纠正别人，她觉得自己是万事通。

2. kooky古怪的

That man is really kooky. He has fifty-three cats!

那个人真怪。他养了53只猫！

3. let someone have it让某人好看

Next time I see Rick, I’m going to let him have it.

下次我看到李克时要他好看。

4. a leg up占上风

All Jeff’s hard work is paying off. He’s a leg up on the rest of his competitors.

杰夫的努力是有报答的。他在竞争对手中占了上风。

5. low-life落魄潦倒的人

Chris is such a low-life. He sleeps on the park bench and drink booze all day.

克利斯真是落魄潦倒。他睡在公园板凳上而且整天喝酒。