work like a tiger

　　生龍活虎地工作

　　three cheers and a tiger

　　三聲歡呼一聲吼

　　How can you catch tiger cubs without entering the tiger's lair?

　　不入虎穴， 焉得虎子?

　　buck the tiger 玩紙牌(特指與賭棍玩牌)

　　tiger sweat 威士忌酒

　　have a tiger by the tail/ He who rides a tiger is afraid to dismount.騎虎難下

　　paper tiger 紙老虎

　　to brag and bully by assuming other people’s authority 狐假虎威

　　a strategic fortress as if guarded by a tiger and a dragon 虎踞龍盤

　　a narrow escape 虎口余生

　　a nation of invaders 虎狼之國

　　to be passionate about something at the beginning but soon lose theirinterest 虎頭蛇尾

　　Sitting on a hill watching tigersfight 坐山觀虎斗 (It means someone takes a sidein a fight until one partyoverwhelms their enemy. )

　　A goat in tiger's skin 羊質(zhì)虎皮 (It means someone who appears strong on theoutside but is timid on the inside。)

　　Three people make a tiger. 三人成虎(The idiom suggests that gossip can be asferocious as a tiger。)

　　A new-born calf has no fear of the tiger. 初生牛犢不怕虎。

　　drive a tiger out from the front door while a wolf comes in the back前門拒虎，后門進狼。

　　like a tiger with wings 如虎添翼(It means someone's might is doubled。)

　　to lure the tiger form the mountain 調(diào)虎離山