They think I work at Starbucks. 他們以為我在星巴克工作。
How long did you work at the store? 你在這家店里工作了多久?
I worked at getting the job done. 我用心完成了這項工作。
I tried my best to work at this marriage. 這段婚姻我用盡了全力。
Learning English can be very difficult. 學英語是非常不容易的。
I know, but you have to work at it. 我知道,不過你必須得試試。