let the cat out of the bag

see eye to eye ＝agree

sit on the fence＝can't decide

be like two peas in a pod

be as thin as a rake

he saw red

learn the ropes 學(xué)著如何做某事

black and white 什么很清楚

now and then不時

step by step慢慢來

bread and butter

now or never

when in Rome do as the Rome

he is a know-it-all

be as different as chalk and cheese

is a spitting image of his father

it runs in a family

家里人人都干這事兒

my own flesh and blood 我的家庭

he is set in his ways 他不喜歡改變