在英语中,介词是什么?答:(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:...