(1)plead guilty to sth 承认犯有...罪（to为介词)

Morris had pleaded guilty to robbery.  

莫里斯已承认犯有抢劫罪。

Henderson pled guilty to burglary. 

亨德森承认犯有入室盗窃罪。

(2)plead with sb to do sth 恳求/请求某人做某事

The lady pleaded with her daughter to come back home. 
那位女士恳求她的女儿回家。

(3)plead sth为…辩护；维护；声援

He appeared before the Committee to plead his case. 

他出现在委员会面前为自己辩护。

He would plead the cause of Russian unity.  

他会公开支持俄罗斯的统一。

(4)plead sth 提出…为理由；把…作为借口

Mr Burke, pleading poverty, changed his mind.

伯克先生以自己穷为由改变了主意。

Mr Giles pleads ignorance as his excuse. 

贾尔斯先生把不知情当作自己的借口。