7. lower1 yourself2 减少身份
lower可以做动词，表示减少；减弱；跌落。
I wouldnt lower myself3 to respond4 to his insults5 if I were you.
我如果你就不会贬低我们的身份，理睬他的辱骂。
8. above yourself 趾高气扬
开心得意的时候是否有飘飘然的感觉。所以说高过自己，也就是形容得意忘形目空一切。
Dont be above yourself. You still have a long way to go.
不要得意忘形，你还有非常长的路要走。
9. behave6 yourself 行为规矩些
Behave yourself or Ill give you a thick ear!
你放规矩一些，不然我就揍你！
形容表现好或者不好，就用well或者badly表示，譬如：
She always behaves7 well/badly when her aunts come to visit.
每当她姨妈来作客时，她一直表现上佳／非常差。
10. shut8 yourself off9 把自己封闭起来，不再和其他人来往
shut sth off主要有这两个意思：
①关闭（或切断）的提供；停止提供
Did10 you remember to shut off the water and gas11 before you left the house?
离开房屋的时候，你记得关掉水和煤气了吗?
②把封闭起来；将隔离
The music room is shut off from the rest of the house by a soundproof wall.
隔音板把音乐间和屋内的其他房间隔开了。
shut yourself off显然用的是第二个意思咯。
When her husband12 died13 she seemed14 to shut herself15 off from her friends and family.
老公过世后，她好像不再与她的朋友和家人来往了。
11. suit16 yourself 由自己作主，自便
suit作动词除去表示合适，适合于，还翻译为他们便。所以说suit yourself 就翻译为自便咯。
I dont think Ill come to the party tonight. All right, suit yourself!
我想我今晚不会去参加聚会。好的，随你的便吧！
12. speak for yourself 那是你一个人的怎么看，我不是那样想的
这个短语一般用于表示不认可某人的看法。
We had17 a really boring18 trip. Speak for yourself! I had a wonderful time!
大家的旅游可真没劲。我可不这么想！我玩得非常高兴！
应该注意，speak up for sb/sth的意思是支持；为辩护，记得加上up哦！
She has often spoken19 up for the rights of working mothers.
她常常为工薪族母亲说好话，维护她们的权益。