1. I always keep my head。
不慌不忙，头脑清醒
2. It never entered my head。
从未有过这个念头
3. I brought matters to a head。
引入决定性阶段
4. My head is in the clouds。
脑子里没什么想法
5. I can’t make head nor tail of this。
搞不清头绪，无法理解
6. I’m in way over my head。
投入太多，已无法控制
7. I could do it standing on my head。
非常简单，十分容易
8. The fame has completely gone to my head。
情绪失控，情绪上脑
9. He’s off his head。
疯了或醉了
10. She likes to keep her head down。
低调行事，避免引起注意
11. They’re still scratching their heads over the results。
挠头、难以理解
12. That joke just went over my head。
无法理解