特别注意： a bit of 不可数名词，表示一点……，也可以： a bit of a(an) 名词，但是表示有点像这个名词所表达的含义。请注意琢磨这个用法。
I've come looking for a bit of advice.
我特来讨教。
With a bit of luck, we'll finish on time.
如果我们运气好，就能够准时完成。
With a bit of luck, we'll be there by 12.
如果顺利点，我们将于12点钟赶到那里。
She'd do anything for a bit of pin money.
为了挣点外快，她什么都肯做。
Well, actually it requires quite a bit of work and research.
嗯，实际上这需要花不少的工夫，做点研究。
It's just a bit of harmless fun.
开个小玩笑罢了，并无恶意的。
He's a bit of a mystery.
他这个人有点儿神秘。
He seems to be a bit of a philosopher.
他像个思想家似的。
He's a bit of a rogue, but very charming.
他好捣蛋，但却很讨人喜欢。
Tony was a bit of a lad ─ always had an eye for the women.
托尼这小子真是个花花公子——总是很会欣赏女人。
The whole place was a bit of a dog's dinner, really.
整个地方乌烟瘴气的，真的。
I think I've got a bit of a stomach bug.
我想我的胃可能出了点儿毛病。
To be frank, he could also be a bit of a bore.
老实说，他有时也会让人厌烦。
I made a bit of a boob throwing that file away.
我犯了个愚蠢的错误，把那份文件扔掉了。
She worked herself up into a bit of a state.
她把自己弄得有点儿紧张。
Students have always been portrayed as a bit of a joke.
学生们总是被描述为有点儿可笑的人。
Seven people in the car was a bit of a squeeze.
那辆车坐了七个人是有点挤。
The rail strike is a bit of a pain.
这次铁路罢工有点头痛。
3.a bit of后可以接动名词：
I've got a bit of shopping to do.
我要买点东西。
I'm sure he'll come with a bit of persuading.
我相信，劝一劝他就会来的。
4.否定结构含义不同
a little：not a little意思为“非常”，相当于“very”。例如：
He is not a little tired.=He is very tired.他很累。(他不是一点儿的累)
She was not a little worried about the expense.
她对那笔开支相当苦恼。
After a whole day's work, I was not a little tired.
过去一整天，我感到很累。
He was not a little surprised when he heard the news.
听到这个消息时很惊奇。
a bit和a little与否定词not连用时，两者的含义是不同的。
a bit：not a bit意思为“根本不/一点也不”，相当于“not at all”。例如：
I'm really not a bit surprised.
我真的一点儿也不觉得惊讶。
Did he give up? Not a bit of it!
他放弃了吗？根本没有！
He is not a bit tired.=He is not tired at all.他一点儿也不累。
Did he give up? Not a bit of it!
他放弃了吗？根本没有！
