用法：
1、a bit of 修飾名詞，通常用于修飾不可數名詞。
午飯只能吃剩下的一點食品了。
2、a bit of的另一種形式是bits of
Besides this,he used part of an old army wireless set,and some bits of wood.
除此之外,他還利用了一部分舊的軍用無線電發報機的一部分零件和一些木片。
3、a bit (of)有點；稍微
I'm a little bit tired.Let's take a short rest.
我有點累了。讓我們休息一會兒。
I'm a bit tired tonight.
今晚我有點疲倦。
The painting on the wall is a bit crooked.
墻上的油畫有些歪。
Don't believe all he says — he's a bit of a boaster.
別全信他說的,他有點自吹自擂。
We were very sorry to see that the houses of some school teachers were a bit of a hole.
看到有些小學教師的住房小得象個窩,我們很難過。
4、a bit (of) 一點兒也（不）
I'm not a bit tired now.
我現在一點兒也不累。
Really,David is not a bit like his brother as far as generosity is concerned.
的確,就慷慨大方這一點來說,大衛確實一點也不像他哥哥。
5、a little = a bit of, 后接不可數名詞； a little = a bit = a little bit = kind of, 后接形容詞，意為“有點兒”。