来源：BBC英语教学

　　原标题：To know something like the back of your hand 了如指掌

了如指掌

　　Rob is going on holiday to a place where Helen grew up. He is asking Helen for help, because he thinks she knows it like the back of her hand. What does he mean? Listen to the programme to find out。

　　文字稿

　　(关于台词的备注 : 这不是广播节目的逐字稿件。本文稿可能没有体现录制、编辑过程中对节目做出的改变。)

　　Rob

　　Hello and welcome to Authentic Real English. I'm Rob and joining me today is Helen。

　　Helen

　　Hi everyone, I'm Helen. Rob, I hear you have a holiday coming up soon。

　　Rob

　　Oh yes, we have booked a trip to China to visit the home of pandas。

　　Helen

　　Do you mean Chengdu?

　　Rob

　　Yes, we are stopping there for a few days and then to HK for two weeks。

　　Helen

　　You know Chengdu is my home town. I grew up there。

　　Rob

　　Oh, I didn't know that. So you must know the place like the back of your hand then。

　　Helen

　　The back of my hand? 我的手背。我的手背还好啊，有点干。不过这和成都有啥关系？

　　Rob

　　Oh, it's a very common expression we use to say that we know somewhere very well, or extremely familiar with the place. You hear people say it all the time。

　　Helen

　　噢，原来是这个意思，当我们听到 know somewhere like the back of your hand，意思就是对什么地方非常了解就像对自己的手背那么熟悉一样。以下是两个例句：

　　Examples

　　He knows the building like the back of his hand。

　　She lived in village all her life, and knows the area like the back of her hand。

　　Helen

　　那么除了说对什么地方很了解之外，这个短语可以用于其它语境吗？

　　Rob

　　Well, we can used to describe books and other things we know very well. It's not just limited to places。

　　Helen

　　这个表达还可以用于对什么东西比如书、兴趣，非常精通了解。Here are more examples:

　　Examples

　　Jenny knows that book like the back of her hand. She has read it at least twenty times。

　　Max knows the Bond films like the back of his hand; he could recite the whole script of all of them。

　　Rob

　　So Helen, since you lived in Chengdu for many years, any recommendations for good places to visit in Chengdu?

　　Helen

　　Actually, the city has changed so much; I would be lost there like any other visitor. But my cousin still lives there. He definitely knows the city like the back of his hand。

　　Rob

　　Maybe I should give him a call。

　　Helen

　　I'm sure he'll be happy to help。

　　Rob

　　Great!

　　Helen

　　Have a good trip then。

　　Rob

　　Thanks。

　　Both

　　Bye!

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