① I'm not a bit tired, so I needn't have a rest.
② Tom's mother couldn't sleep well recently. She was not a little worried about Tom's health.
兩個(gè)詞組在加了not后，意思好像大不相同，請(qǐng)問(wèn)這是怎么回事?
a bit 和 a little 在意思上非常相似，都表示“一點(diǎn)點(diǎn)，有點(diǎn)兒”之意。它們用作副詞，表達(dá)“程度”時(shí)，修飾動(dòng)詞、形容詞、副詞、介詞短語(yǔ)或比較級(jí)，意思相同，可以互換。例如：
He is a bit like his father.
He is a little like his father.
他有點(diǎn)像他的父親。
The speaker spoke a bit louder in order to make himself heard more clearly.
The speaker spoke a little louder in order to make himself heard more clearly.
講話人把嗓門(mén)提高了一點(diǎn)兒，以便讓別人聽(tīng)得更清楚。
但是，在下列情況下，它們是有區(qū)別的：
1. 當(dāng)它們用作定語(yǔ)，表達(dá)“數(shù)量”時(shí)，a bit后要加of，a little 則不用。例如：
She ate a bit of bread for lunch.
She ate a little bread for lunch.
她午飯就吃了一點(diǎn)點(diǎn)面包。
2. 但是，一旦否定，not a bit 和 not a little的意思就大不一樣了，甚至相反。
not a bit 意思是“一點(diǎn)也不”，相當(dāng)于not at all, not in the least之意。例如：
He is not a bit like his father.他一點(diǎn)也不像他父親。
Are you hungry? --- No, not a bit. 你餓了嗎? 不，一點(diǎn)也不餓。
She is not a bit happy.她很不開(kāi)心。
not a little意思是“非常，很”，相當(dāng)于 very (much), a lot 之意。例如：
He is not a little like his father.他很像他的父親。
I am not a little surprised at the news. 我對(duì)這個(gè)消息深感驚訝。
The boy was not a little worried because he hadn't heard from her parents for a long time. 那個(gè)男孩很擔(dān)心，因?yàn)楹镁脹](méi)收到父母的來(lái)信了。
【注意】有時(shí)bit之前，還可以加little，進(jìn)一步修飾程度之低，如：
I'm a little bit tired. Let's take a short rest. 我稍有點(diǎn)累了。讓我們休息一會(huì)兒。
