别丢人现眼了!

　　Don't make a fool of yourself.

　　I'm going to dance. (我想去跳舞。)

　　Don't make a fool of yourself. (别丢人现眼了!)

　　Don't play the fool.

　　Don't make an ass out of yourself.

　　Stop acting like a fool.

　　分清场合。

　　Think about where you are.

　　You should consider where you are.

　　你也不看看你多大了。

　　Act your age. *一般用在父母等上年纪的人教育年轻人时。“做和自己年龄相符的举止、行为”。

　　How do you like my new red skirt? (你觉得我这条新的红裙子怎么样?)

　　Act your age. (你也不看看你多大了。)

　　You should act your age. *比较温和的说法。

　　Behave in accordance with what is expected of your age!

　　You should behave more maturely. (你该表现得更成熟些。)

　　You shouldn't act like a child. (别像个孩子似的。)

　　你想得也太天真了。

　　Your view is too optimistic. *optimistic “乐观的”，“乐天派的”。

　　你的想法太不现实了。

　　You should get your head out of the clouds. *直译是“你应该把你的脑袋从云中伸出来”，即“你的想法太不实际了，回到现实中吧”。

　　You should get your head out of the clouds. (你的想法太离谱了。)

　　Maybe you're right. I should try to be more down-to-earth. (也许你是对的。我该更现实点儿。)

　　You aren't being realistic.

　　You should be more logical. *logical “符合逻辑的”、“道理上讲得通的”。

　　别再重复这种愚蠢的错误了。

　　Don't make such stupid mistakes again! *make a mistake 惯用语， “出错”。

　　Don't make such stupid mistakes again! (不要重复这种愚蠢的错误。)

　　I won't, I won't. (不会了，不会了。)

　　You should be more careful! (你应该多加小心。)

　　Don't make dumb mistakes again!