1.合成介词和复杂介词
合成介词: inside, into, onto, out of, outside, throughout, upon within, without
复杂介词: according to, along with, apart from, as for, as to, because of, by means of, in front of, in spite of, instead of, in accordance with, on account of, on behalf of, owing to, due to, together with, up to, with regard to, prior to等
2.介词在句末:
this is what he is interested in.
does everyone has a seat to sit on?