1.a bit與a little都可作程度副詞,表示"稍微、一點(diǎn)兒"的意思,修飾動(dòng)詞、形容詞、比較級(jí)等,二者可以互換.例如：
Will you please turn down the radio a bit/a little?(動(dòng)詞)請你把收音機(jī)聲音關(guān)小一點(diǎn)好嗎?
She's a bit/a little afraid of the teacher.(形容詞)她有點(diǎn)怕老師.
Her mother feels a bit/a little better today.(比較級(jí))她母親今天感覺好一些.
2.for a bit和for a little意思相同,相當(dāng)于for a while或for a short time,可互換.例如：
Let's rest for a bit/a little.讓我們休息一下.
II.不同之處
1.a little可以直接修飾不可數(shù)名詞,而a bit修飾不可數(shù)名詞時(shí),只能用a bit of.例如：
Tom has a little money./Tom has a bit of money.湯姆有一點(diǎn)錢.
但是,當(dāng)a little修飾的名詞前有this,that,所有格等限定詞時(shí),也要用a little of結(jié)構(gòu).例如：
I want to drink a little of that drink.我想喝點(diǎn)那種飲料.
2.a bit和a little與not連用時(shí),意思大相徑庭.not a bit＝not at all,意為"一點(diǎn)也不"；not a little＝very much,意為"十分"、"相當(dāng)"、"極其".