核心句型：
You hit the nail on the head!
你说得一点没错。
hit the nail on the head 字面意思是：“敲钉子的钉帽”，木工敲钉子时，正敲在它扁平的顶上，才能钉得恰到好处。这个短语引申而来的意思是“恰到好处，正中要害，一针见血”。因此，当美国人说"You hit the nail on the head!"时，他/她要表达的意思就是:"You hit the point!"、"You are right about this!"。
情景对白：
Jane: That fast-food corporation went bankrupt last week.
简：那家快餐集团上周倒闭了。
Shirley: They were hoisted by their own petard. Many customers had food poisoning.
雪莉：他们是自食恶果，那么多客人都食物中毒了。
Jane: Well, you hit the nail on the head!
简：嗯，你说得一点没错。
搭配句积累：
①The main problem is their attitude towards customers.
最大的问题在于他们对客户的态度。
②Conscience is the most important thing in catering industry.
在餐饮行业，良知是最重要的。
③Food security should be controlled from the headstream.
食品安全要从源头来监督控制。
④We should improve from the production line.
我们应该从产品线开始改善。
单词：
1. bankrupt adj. 破产的
If the firm cannot sell its products, it will go bankrupt.
如果公司的产品卖不出去，它就会倒闭。
He was declared bankrupt after failing to pay a £114m loan guarantee.
由于无力偿还1。14亿英镑的贷款担保，他被宣布破产。
2. hoist vt. 升起，举起
Hoisting my suitcase on to my shoulder, I turned and headed toward my hotel.
我把手提箱扛到肩上，转身向入住的旅馆走去。
Grabbing the side of the bunk, he hoisted himself to a sitting position.
他抓住铺位的床沿，坐起身来。
3. petard n. 爆炸装置，爆竹
The students were hoist by their own petards, however, as Granada decided to transmit the programme anyway.
不过，学生们聪明反被聪明误，格拉纳达最终还是决定要转播这个节目。
It was indeed a clever plan to entrap his opponent, but in the end he was hoist by his own petard.
设圈套陷害他的对手固然是个妙计，可是到头来却是作法自毙。
4. conscience n. 良心
I have battled with my conscience over whether I should actually send this letter.
我备受良心的煎熬，不知是否真的应该把这封信寄出去。
I could go away again with a clear conscience.
我可以问心无愧地再次离开。