1. Don't throw away the baby with the bath water. (When you want to discard or throw away sth bad, be sure to keep the good or useful things. don't throw everything away.
2. Don't throw stones in a glass house. (If you yourself have some vulverability, do not attack others in case your attack may hurt yourself.)
3. Speak of the angels and you'll hear their wings. (while you are talking about sb. he or she comes to you or appears. People also say "Speak of the devil.")
追问还有没有？帮我弄多点~谢谢~
追答太多了，给你链接，你自己去选吧。
http://wenku.baidu.com/view/777850c72cc58bd63186bd11.html
下面这个是英文的网站，有很多，还有英文解释和例句：
http://oels.byu.edu/student/idioms/idiomsmain.html