写出20个介词(最少20个）

1）简单介词：about,across,after,against,among,around,at,before,behind,below,beside,but,by,down,during,for,from,in,of,on,over,near,round,since,to,under,up,with等等.
2）合成介词：inside,into,outside,throughout,upon,without,within
3）短语介词：according to,along with,apart from,because of,in front of,in spite of,instead of,owing to,up to,with reguard to
4）分词介词：considering,reguarding,including,concerning

about, across, after, against, among, around, at, before, behind, below, beside, but, by, down, during, for, from, in, of, on, over, near, round, since, to, under, up, withinside, into, outside, throughout, upon, without, within