know something inside out 对某事了如指掌

时间：2020-11-09 08:17:21

（单词翻译:单击）

表达 “know something inside¹ out” 的意思是 “对某件事情、某个科目或主题了如指掌、洞悉透彻”。

例句

Don't worry! You'll be fine in tomorrow's exam². You know the book inside out by now!

别担心！明天的考试你一定会考好的。你现在对这本书已经了如指掌了！

If you ever³ have any questions about the new IT system⁴, ask Polly. She helped build it, so she knows it inside out.

如果你对新的信息技术系统有任何疑问，就去问波莉吧。这个系统是她帮忙建立的，所以她对整个系统了如指掌。

My grandad was⁵ a chess fanatic⁶. You could⁷ ask him anything – he knew the game inside out.

我祖父曾是个国际象棋迷。你可以问他任何问题，他对这个游戏了如指掌。

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1 inside
n.内部，内脏，内幕；adj.内部的，秘密的，户内的；prep.在...之内
参考例句：
Two minutes later we were inside the taxi.两分钟以后我们已经坐在出租车里面了。 He will be back inside two days.他将在两天内回来。

2 exam
n.(=examination)检查；考试
参考例句：
I hope to pass this exam.我希望通过这次考试。 His exam results were good.他的测验成绩不错。

3 ever
adv.曾经；永远；不断地；在任何时候；究竟
参考例句：
Have you ever been to hangzhou?你曾经去过杭州吗？ I will be young and strong and beautiful for ever.我将永远年轻、强壮，永远漂亮。

4 system
n.系统，体系，制度，方式，秩序，分类原则
参考例句：
He is good at the subject of social system.他擅长于社会制度问题。 He created a new system of teaching foreign languages.他创造了一种新的外语教学体系。

5 was
v.(is,am的过去式)是，在
参考例句：
He said he was right.他说他是正确的。 He was cold and hungry.他又冷又饿。

6 fanatic
n.狂热者，入迷者；adj.狂热入迷的
参考例句：
Alexander is a football fanatic.亚历山大是个足球迷。 I am not a religious fanatic but I am a Christian.我不是宗教狂热分子，但我是基督徒。

7 could
v.能，可能(can的过去式)；aux.v.(can的过去式)能；可以
参考例句：
Could I open the window?我可以打开窗子吗？ I could wait ten minutes.我可以等十分钟。