sb：某人例句：Advise sb. not to drive too fast.忠告某人不可把车开得太快。

sb 即英文somebody的缩写。词性为复合不定代词（同“something、anybody”一个词性。）意思为：某人、某个人，sb是指人，sth是指物somebody相关短语：

1、get somebody off her duff 使某人采取行动...2、call somebody everything but 说某人…,只是没用这...3、get somebody off his duff 使某人采取行动...4、do somebody the honor to 有幸somebody相关例句：Somewhere somebody sometimes does something good.在某处某人有时做某些好事。Since somebody let the gardener go.某人让园丁卷铺盖了。