一字不识---Did not know the word
九霄云外---Cloud Nine
一刀两段===Cut two
一了百了---Resolved once and for all
一目了然---At a glance
晴天霹雳--A bolt from the blue
看家本领---An ace up one's sleeve
火上浇油 ---Add salt to the wound
爱屋及乌---Love me, love my dog
笨鸟先飞---A slow sparrow should make an early start