爆笑英语口语 第75期:知根知底
时间：2018-12-26 作者：英语课 分类：爆笑英语口语
英语课
Language Points
God only knows.
If you know what is good for you
know backwards 1 and forwards=know inside out
He's been teaching physics for 30years,so he knows the subject backwards and forwards.
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backwards
adv.往回地，向原处，倒，相反，前后倒置地
参考例句：
He turned on the light and began to pace backwards and forwards.他打开电灯并开始走来走去。
All the girls fell over backwards to get the party ready.姑娘们迫不及待地为聚会做准备。
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爆笑英语