他本不該把車開得那么快。

　　He oughtn't to have been driving so fast.

　　你怎么這么快就過(guò)來(lái)了？

　　How ever did you get here so quickly?

　　熱帶地區(qū)黑夜來(lái)得快。

　　Night descends quickly in the tropics.

　　我們的貨物周轉(zhuǎn)快。

　　We have a fast turnover of stock.

　　孩子比大人學(xué)得快。

　　Children learn faster than adults.