介绍:
1.Play/keep one's cards close to the chest 行动诡秘,把…秘而不宣,不把…讲出去,就…保守秘密.如果某人坚持把自己的计划或想法放在心里，不告诉任何人，你可以说：He plays his cards close to the chest.
栗1：在谈判的过程中，她常常对于自己的底牌守口如瓶。正确的选项是
1.she always__________during the negotiation.
A.keep her cards close to her chest.
B.Kept her cards close to her chest
C.keeps her cards close to her chest.
(正确答案C哦，注意时态哦)
2. Hold all the cards 处于非常强势（或有利）的位置– to be in a strong position
持有所有的牌 - 掌控整体局势，占上风
栗2： 工会在整个薪资讨论过程中一直占上风
连词成句the trade union， held，during， all the cards ， the pay talks
The trade union held all the cards during the pay talks.
3. play one’s trump card.打出王牌，使出绝招，使出杀手锏
栗3.竞争对手怕是要打出他们的王牌了
Our competitors are gonna play their trump cards.
4. play hard ball打硬式棒球，采取强硬手段，不正当手段
栗4. To win the game, Team A finally played hard ball.
5. A whole new ball game – a completely different situation
一个全新的球局 - 一个完全不同的局面
栗5.High school is tired but university is a whole new ball game.
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