1.able to do something standing on one's head -> do something very easily and without effort
做某事轻而易举
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。

2.bang your head against a brick wall -> do something without any chance of it succeeding
做不可能成功的事情
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。

3.beat something into someone's head-> teach someone something by repeating it over and over again
通过不断的重复来教给某人某事
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。
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。

4.bite someone's head off -> criticize someone strongly
严厉批评某人
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 bit 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。

5.bring something to a head -> cause a crisis to happen
使产生转折点
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。

6.bury one's head in the sand -> ignore something completely
完全忽略某事
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。

7.can't make heads or tails out of something -> not be able to understand something
无法理解某事物
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。

8.drum something into someone's head -> repeat over and over until someone learns something
一遍遍地重复，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。

9.fall head over heels in love -> fall deeply in love
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？

10.from head to toe -> dressed or covered in something completely
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。