get sb done表示讓賓語被做，強調(diào)被動性的動作；get sb/sth+形容詞/副詞/介詞表示使某事發(fā)生，使賓語處于什么狀態(tài)。
例句：
He got his brother to help him.
他讓他兄弟來幫助他。
He got the car started.
他發(fā)動了小汽車。
He got his bike running very fast.
他把自行車騎的飛快。
Please get your ticket ready.
請準(zhǔn)備好票。