1. do/does
does 用于第三人称单数,其余的都用do( 用作第一人称 第二人称 或复数
2. Someday I will do sth. like sb. does
Someday I will paly guilar like my father does
Someday I will paly guilar like they do
 
3. trash can=garabage can,垃圾箱
    sweep,打扫
rug [ rʌg ] 毯子,地毯,旅行毯