The following idioms and expressions use the noun 'head.' Each idiom or expression has a definition and two example sentences to help understanding of these common idiomatic expressions with 'head.'
下列习语和表达中会使用到名词‘head’，每个习语或表达后都有一个定义和两个例句，来帮助你理解这些常用的‘head’习语表达。

Able to do something standing on one's head
做某事轻而易举

Definition: do something very easily and without effort
定义：很轻易地完成某事

He's able to count backward standing on his head.
倒着数数对他而言轻而易举。

Don't worry about that. I can do it standing on my head.
别担心。这对我来说是小菜一碟。

Bang your head against a brick wall
做不可能成功的事情

Definition: do something without any chance of it succeeding
定义：做丝毫没有成功把握的事

I've been banging my head against a brick wall when it comes to finding a job.
我根本就找不到工作。

Trying to convince Kevin is like banging your head against a brick wall.
想要说服凯文是不可能的事。

Beat something into someone's head
通过不断的重复来教某人做某事

Definition: teach someone something by repeating it over and over again
定义：通过反复重复的方式来教会某人某事

Sometimes you just need to beat grammar into your head.
有时候，你只需要通过不断地重复来学习语法。

My father beat the importance of kindness into my head.
爸爸一直在我面前说着友善的重要性。

Bite someone's head off
严厉批评某人

Definition: criticize someone strongly
定义：非常严厉地批评某人

Tim bit my head off last night at the party.
蒂姆在昨晚的派对上严厉地批评了我。

Don't bite my head off just because I made a mistake.
不要只是因为我犯了错误就对我大加指责。

Bring something to a head
使产生转折点

Definition: cause a crisis to happen
定义：使事件产生转折点

We need to bring the situation to a head to get a resolution.
我们需要使情况出现转机，从而找到解决的办法。

The immigration situation brought the political crisis to a head.
移民情况使得政治危机出现转折。

Bury one's head in the sand
完全忽略某事

Definition: ignore something completely
定义：完全忽略某件事

You're going to have to face the situation and not bury your head in the sand.
你要面对事实，不要畏畏缩缩。

He chose to bury his head in the sand and not confront her.
他选择逃避，不去面对她。

Can't make heads or tails out of something
无法理解某事物

Definition: not be able to understand something
定义：无法理解某件事

I hate to admit that I can't make heads or tails out of this math problem.
我不想承认，我完全无法理解这道数学题。

The politicians can't make heads or tails out of the current employment crisis.
这些政治家们完全不理解当前的就业危机。

Drum something into someone's head
一遍遍地重复，直到某人学会某事

Definition: repeat over and over until someone learns something
定义：一遍一遍地重复，直到某人学会某事

I had to drum German grammar into my head for two years before I could speak the language.
在我学会德语之前，只能将语法一遍又一遍地学习了两年。

I suggest you drum this into your head for the test next week.
为了准备下周的测试，我建议你多重复几次。

Fall head over heels in love
深深爱上

Definition: fall deeply in love
定义：深深爱上

She fell head over heals in love with Tom.
她深深地爱上了汤姆。

Have you ever fallen head over heels in love?
你有没有深深地爱过一个人？

From head to toe
全身都穿着或覆盖着某物

Definition: dressed or covered in something completely
定义：全身都穿着或覆盖着某物

He's dressed in blue from head to toe.
他从头到脚都是蓝色的衣服。

She's wearing lace from head to toe.
她全身都穿着蕾丝。

Get a head start on something
早早地开始干某事

Definition: begin doing something early
定义：很早地开始做某事

Let's get a head start on the report tomorrow.
每天我们早点开始报道吧。

She got a head start on her homework immediately after school.
一放学，她早早地就开始写起作业。

Get your head above water
不畏困境，迎难而上

Definition: keep going in life despite many difficulties
定义：困难重重，义却仍然坚持

If I can find a job I'll be able to get my head above water.
如果我能找到工作，就能维持生活了。

Study these pages and you'll get your head above water.
学习这几页的内容，你就能走出困境了。

Get someone or something out of one's head
摆脱某人或某事

Definition: remove someone or something from your thoughts (often used in the negative)
将某人或某事从你的脑子里脱离出去（常常使用贬义）

I'm really upset that I can't get her out of my head.
我忘不了她，这使我很难受。

She spent three years getting those experiences out of her head.
她花了三年的时间将这些经历从脑海中忘记。

Give someone a head's start
在比赛中让某人先开始

Definition: let someone else begin before you in a competition of some kind
定义：在某种比赛中，让某人先开始

I'll give you twenty minutes head's start.
我先让你来20分钟。

Can you give me a head's start?
你能让我先开始吗？

Go over someone's head
无法理解某事

Definition: not be able to understand something
定义：无法理解某件事

I'm afraid the joke went over her head.
恐怕她听不懂这个笑话。

I'm afraid the situation goes over my head.
我恐怕还无法理解情况。

Go to someone's head
使某人觉得自己比他人优秀

Definition: make someone feel better than others
定义：使某人觉得自己比他人优秀

His good grades went to his head.
他的好成绩使他觉得自己比别人更优秀。

Don't let your success go to your head. Stay humble.
不要被胜利冲昏了头。谦虚一点。

Have a good head on your shoulders
聪慧的

Definition: be intelligent
定义：明智聪慧的

She's got a good head on her shoulders.
她非常聪明。

You can trust him because he's got a good head on his shoulders.
你可以相信他，因为他十分聪明。

Head someone or something off
比别人先到达

Definition: arrive before someone or something else
定义：比某人或某事提前一步到达

Let's head them off at the pass.
让我们先发制人。

We need to head the problem off.
我们需要比别人先解决这个问题。

Hit the nail on the head
一针见血

Definition: be exactly right about something
定义：极其正确

I think you hit the nail on the head.
我觉得你真是一针见血。

His answer hit the nail on the head.
他的答案说到点子上了。

In over one's head
举步维艰

Definition: do something that is too difficult for a person
定义：某事对某人而言太难了

I'm afraid Peter is in over his head with Mary.
恐怕玛丽无法对付皮特。

Do you ever feel that you're in over your head?
你有没有感觉到自己做的事难于登天？

Lose your head
失去理智

Definition: become nervous or angry
变得紧张或愤怒

Don't lose your head over the situation.
面对这种情形不要紧张。

She lost her head when he told her he wanted a divorce.
当他告诉她想离婚时，她开始变得愤怒。