know something backwards 倒背如流
【讲解】
此语意指to know something very well or perfectly,也可写作know something backwards and forwards。与之相似的短语back-wards and forwards则表示“来来回回，反反复复”，例如：walk backwards and forwards （来回走动）。
【对话】
A:You like the English literature?
A:你喜欢英国文学吗？
B:Yeah. I like the novels especially.
B:喜欢，我最爱读的是小说。
A:Do you like Dickens' novels?
A:你喜欢狄更斯的作品吗？
B:Yes I even know some of them backwards.
B：非常喜欢，有些我都能倒背如流。
A:Really? It does good to you all the time, doesn't it?
A:真的？你一定受益匪浅，是吧？
B:Of course.
B:当然。
