一、介词后加什么
介词后面加宾语
宾语就是名词罢了.只不过有点形式不同.
prep.(介词)+n.（一般的名词如CAR,DOG就顺便加）
prep.+人称（代词改成宾语的格式,简称为传说中的宾格）
即him his her us them it等.
prep.+动名词(顾名思义,此时动词已不再是原来那个动词了,而是以名词的形式出现) 就是常说的V-ing形式.
介词是一种用来表示词与词, 词与句之间的关系的词。在句中不能单独作句子成分。
介词后面一般有名词代词或相当于名词的其他词类，短语或从句作它的宾语。
介词和它的宾语构成介词词组，在句中作状语，表语，补语或介词宾语。
二、介词后面跟什么词语
介词后面的词是没有规定的.
介词+名词(指方位的,地点的,物品)：at school,at home,on the desk
介词+动名词:He is good at playing football.
介词+表示时间的词:in the morning ; at noon
介词+人名:Except Mr.Wang,we went to see the film.
介词+名词性短语:The composition is very good except for a few spelling mistakes.
介词短语在句子中的语法功能是:
1.定语.如:The key to the door is missing.
2.状语.如:They are playing basketball on the playground.
3.表语.如:Japan is to the east of China.
4.宾语补足语.如:We consider education of great importance.
5.主语补足语.如:These machines must be kept in good cindition.
