clerk的第三人称单数（三单）为：clerks...

Betty started as a shipping clerk at the clothes factory...贝蒂的第一份工作是在服装厂里当运务员。I've never seen such a polite clerk.我从未见过这样有礼貌的店员。They looked down on Willis Wookford the bank - clerk.他们瞧不起银行职员威利斯·伍德福德.She was offered ...

clerk的一般过去时为：clerked...