abit of和a bit的区别主要在于含义及用法上。a bit of的中文含义为“有点儿、有几分、稍微”，后面接名词；a bit的中文含义为“一会儿、片刻、稍稍”，不能直接修饰名词，可修饰动词、形容词、副词、介词短语或比较级，是非正式用语。

a bit of意为有点儿;有几分;稍微。

例句：She has a bit of private money, so they manage quite nicely

她有一点私房钱，所以他们过得很舒心。

With a bit of luck, we'll finish on time.

如果我们运气好，就能够准时完成。

Seven people in the car was a bit of a squeeze.

那辆车坐了七个人是有点挤。

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。

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。

Mentioning her ex-husband was a bit of a clanger.

提及她的前夫是有点令人难堪的失言。

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。

There's nothing better than a bit of retail therapy.

没有什么比花钱买点东西能让自己高兴起来了。

The whole place was a bit of a dog's dinner, really

整个地方乌烟瘴气的，真的。

a bit意为一会儿，片刻（英国英语中亦用for a bit）;稍微（多或少一些）;稍微;稍稍;有点儿。

例句：I should lie down for a bit, if I were you.

如果我是你，我就会躺一会儿。

There's room for another one if you move up a bit.

如果你挪开一点，这里还可以容纳多一个人。

With a bit of luck, we'll finish on time.

如果我们运气好，就能够准时完成。

Seven people in the car was a bit of a squeeze.

那辆车坐了七个人是有点挤。

I'm feeling a bit fragile after last night.

昨夜以后我觉得身子有点发虚。

I'm sure he'll come with a bit of persuading.

我相信，劝一劝他就会来的。

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。