介词是英语中一类非常重要的词类，在英语学习个使用中非常活跃!典型例句:1.He prefers staying at home watching TV to walking around for several hours in the shopping centre.
allow sb / sth to do sth:People aren’t allowed to eat food on the underground in Nanjing.在南京，地铁上禁止人们吃东西。
I returned him the book=I returned the book to him。3，跟复合宾语的及物动词:有些动词只跟宾语意义不完整，宾语后必须再加上补足语，来补充说明宾语的性质，状态。
