挥金如土　spend money like water
晴天霹雳　a bolt from the blue
了如指掌　be at one's finger tips
赴汤蹈火　go through fire and water
充耳不闻　turn a deaf ear to ...
视而不见　turn a blind eye to../shut one's eye from

指鹿为马　talk black into white
一箭双雕　kill two birds with one stone
差之毫厘，谬以千里　a miss is as good as a mile
烂醉如泥　be dead drunk
混水摸鱼　fish in troubled water
原形毕露　show the true color
害群之马　black sheep
欲速则不达　more haste ,less speed
不伦不类　neither fish nor flesh
画蛇添足　Bring coal to Newcastle(著名的产煤城市)
泄露天机　to let the cat out of the bag
孤注一掷　put all one's eggs in one's basket
不辞而别　Take French leave
班门弄斧　To teach fish to swim/to teach grandma to suck eggs