291. 首先,你必須努力工作。
[誤] At first, you must work hard.
[正] First, you must work hard.
注:at first 指“起初,開(kāi)始的時(shí)候”,如:At first I found this question very difficult, but finally I managed to
answer it(一開(kāi)始我覺(jué)得這個(gè)問(wèn)題很難回答,不過(guò)最后我還是答出來(lái)了);first 才是指“首先”。又如:First, let me introduce myself(首先,請(qǐng)?jiān)试S我介紹一下我自己)。