✔ 最佳答案
phrasal verb 通常都係 verb + particle (preposition or adverb) + object。 例如: take away the food; take over the project; take on the challenge; take after your father。
有時亦可以係 verb + object + particle ，例如: take the food away, take the project over, 但唔可以話 take your father after。
每一個 phrasal verb 都係慣性形成，所以擺放 particle 嘅位置並無一個定律。
唯一嘅定律係如果 object 係 pronoun，particle 一定要擺 object 之後， 例如： take him away (唔係 take away him)； take it over (唔係 take over it)。
2010-10-24 23:37:38 補充：
以上講得唔清楚。關於Pronoun嘅定律。只係適用於可以將 particle 擺在 object 後面嘅 phrasal verb。例如: Mary is just as pretty as her mother： She takes after her. 雖然 object 係 pronoun，亦唔可以話： She takes her after。
2010-10-27 13:56:07 補充：
係，除咗個 pronoun rule 之外，其它都冇定律。
個 pronoun rule 最規律嘅地方就係如果個 object 可以擺中間或者擺尾，例如 The man picks up the book; the man picks the book up。咁將 "the book" 轉成 pronoun 時就一定唔可以擺尾。即係只可以話： the man picks it up，而唔可以話: the man picks up it。
