一、often
adv.經(jīng)常;常常;時(shí)常;再三
例句
1、This resulted in overpriced and often inferior products
這就導(dǎo)致了標(biāo)價(jià)過(guò)高而往往質(zhì)量低劣的產(chǎn)品的出現(xiàn)。
2、People often have incorrect information about food.
人們對(duì)食物經(jīng)常會(huì)有不正確的認(rèn)識(shí)。
3、She was often downright rude to him.
她常對(duì)他十分粗魯。
二、usually
adv.通常，經(jīng)常，平常，慣常地;一直，向來(lái);
例句
1、This year hotels that usually are jammed had vacancies all summer.
今年，那些通常爆滿的旅店整個(gè)夏天都有空客房。
2、Finance is usually the biggest problem for students.
經(jīng)濟(jì)問(wèn)題通常是學(xué)生最大的問(wèn)題。
3、This condition usually clears up with regular shampooing.
這種情形通常多用香波洗洗頭即可消除。