clean

　　We must keep our hands clean. 此句中的clean用作形容词,意为“干净的,清洁的”,这是clean的常用法之一。

　　She is cleaning the blackboard. 此句中的clean用作动词,意为“弄干净,清洁”,这是clean的常用法之二。

　　除了以上用法外,clean还有其它用法。如:

　　① I clean forgot about it. (clean用作副词,意为“彻底地,完全地,全部地”。)

　　② The car needs a good clean. (clean用作名词,意为“清洁过程,清扫”。)

　　③ The government should come clean about its plans. (come clean意为“说出真相,全盘招供”。)

　　④ We clean the machine down at the end of each day. (clean sth down 意为“擦洗干净”。)

　　⑤ The waiter hurried to clean up the pieces of the broken plates. (clean up意为“清理掉,收拾干净”。)