a little可直接修飾不可數(shù)名詞，而a bit則需在后面加介詞of才可修飾不可數(shù)名詞。a little bit與a bit用法相同，但表達(dá)意義更小，a bit little放句中表一個非常少的或非常小的。

Tom has a little money. 湯姆有一點錢。

Tom has a bit of money. 湯姆有一點錢。

I want to drink a little of that drink. 我想喝點那種飲料。

The patient's condition is getting a little better . 病人的情況好轉(zhuǎn)了些。

She felt a bit/little tired. 她覺得有點兒累。

Please wait a little bit. 請稍等片刻。

來源：高三網(wǎng)