1.简单介词
（1）普通介词 at，by，for，in，over，to，up
（2）合成介词 onto，into，within，without
（3）分词介词 concerning，considering，including，regarding
2.双重介词
at about except for from across from among from behind
from beyond from inside from throughout from under in between
since before until after/before up to up until
3.短语介词
according to apart from because of by means of due to
in addition to in case of in front of in place of in spite of
instead of on behalf of out of with reference to with regard to