快的副詞用英語怎麼表達？

他本不該把車開得那麼快。

He oughtn't to have been driving so fast.

你怎麼這麼快就過來了？

How ever did you get here so quickly?

熱帶地區黑夜來得快。

Night descends quickly in the tropics.

我們的貨物週轉快。

We have a fast turnover of stock.

孩子比大人學得快。

Children learn faster than adults.