bec的学习是一个积累的过程，在学完了bec教材后，就要不断扩大自己的阅读量，以及经常练习和bec商务英语有关的口语。下面是一篇关于坦白交代的口语练习。
bec商务英语核心句型：
you’d better come clean.
你最好坦白交待。
come clean 直译过来就是：“变干净”，所以这个短语的正确意思是：“全盘招供，坦白交待，和盘托出”。因此，当美国人说"you’d better come clean."时，他/她要表达的意思就是:"you’d better tell the truth."、"you’d better not tell lies."、"you’d better be frank."。
情景对白：
colleague: the personnel manager doubts about my forged degree. what should i do?
同事：人事经理怀疑我的假学历，怎么办?
benjamin: you’d better come clean. maybe he will keep you in view of your good performance.
本杰明：你最好坦白交待，或许他考虑到你的表现很好而留下你。
搭配句积累：
①i’ve involuntarily accepted a large amount of rebate from a company.
我身不由己，从一家公司收受了一大笔回扣。
②i have lost an important document. what shall i do?
我弄丢了一份重要的文件，怎么办啊?
③i broke our manager’s favorite potting. should i tell him?
我打碎了经理钟爱的盆栽。我应该告诉他吗?
④i’m afraid that the boss might have known my mistake.
恐怕老板已经知道我的过失了。
bec单词：
involuntarily adv. 身不由己地
another surge of pain in my ankle caused me to give an involuntary shudder.
脚踝突然又一阵疼痛，痛得我直打哆嗦。
i shivered involuntarily with an inexplicable dread.
我怀着莫名其妙的恐惧，身不由己地不寒而栗。
love is not to say that and should not, sometimes involuntarily pay nothing.
爱,也不是说该与不该,有时是身不由己的付出罢了。
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