用作定语
▲～+n.
 Don't read worthless books.不要读些没有用的书。
He is a worthless fellow who lives by gambling.他是个靠赌博为生的窝囊废。
用作表语
▲S+be+～
 He was worthless as a painter.他作为画家一事无成。

［同义词］   nothing, unusable, useless, valueless
［反义词］   valuable