请看题：
“If you want a necklace, I'll buy one for you at once.”
“Oh, no. A necklace is not _____ that I need most.
A. anything B. something
C. nothing D. everything
此题容易误选A，机械地套用以下规则：something 用于肯定句，anything 用于否定句或疑问句。
【分析】当然以上规则在通常情况下是有效的，但此句不属通常用法。此题的最佳答案应是B，something 在此的意思不是“某种东西”，而是指“那种东西”或“这种东西”，在此即心中最想要的那种东西；请看经典例句：
This is something that we should sit down and discuss as a team.
（作为一个团队）这件事我们应当坐下来一起认真讨论一下。
It's his problem, not something he should unload onto you.
那是他的事，他不该把问题甩给你。
It's not something I can give you rules for; you'll have to use your judgement.
不是我把规则给你就行了，你得运用自己的判断力。
It's not something I would care to try myself but if she wants to, good luck to her.
这件事我自己是不想做的，但如果她想试一试，祝愿她成功。
以上5例摘自《牛津高阶英汉双解词典》
Is this project something that you think is doable?
你认为这个项目可行吗？
I don't want to do something that would undermine the chances of success.
我不想做会影响成功机会的事情。
以上2例摘自《柯林斯高阶英汉双解学习词典》
Are they stumbling? Do they need something that they don't have?
他们受挫了吗?他们需要一些自己并不具备的东西吗?
四级真题- 2019年 6月
It is not something that just anyone can be good at.
它不是任何人都可以胜任的。
四级真题- 2016年 12月
It's not something you see every day ．
这不是你每天都能看到的。
高考真题- 2019 浙江
But why not try something unexpected?
但为什么不尝试一些意想不到的事情呢?
中考真题- 2016 呼和浩特
It's not something that we want to talk about; let's change the subject.
这不是我们想谈论的事情；让我们换个话题。
It's not something I enjoy; I do it purely out of a sense of duty.
这不是我喜欢的东西；我这样做纯粹是出于责任感。
Self-control is not something that comes with your birth.
自我控制不是你出生时就有的。
This is not something that would disturb me anyway.
这不会打扰到我的。
Marriage is not something to be undertaken lightly.
婚姻大事不可掉以轻心。
《外研社英语同义词辨析词典》
I would be remiss if I did not do something about it.
如果我对此不做点儿什么，就是不负责任。
You would have to be pretty hard-hearted not to feel something for him.
只有铁石心肠的人才会对他无动于衷。
以上2例摘自《柯林斯高阶英汉双解学习词典》
To make money, or something else?
赚钱，还是其他什么？
Are you trying to hide something from me?
你是不是有什么事要瞒着我?
I thought something wasn't right today.
我认为今天有些事有点不对头。