2013年宁波小升初备战已经展开了，对于英语的一些基础知识大家了解了多少呢?下面是宁波奥数网小编整理的英语基础知识，希望对大家有所帮助。

　　一、介词的分类

　　1.介词不能单独作句子的成分，而是用来表示名词或代词等和句中其他词之间的关系，通常放在名词或代词之前，构成介词短语。根据结构，介词主要分成四种：

　　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

　　2.从意思上考虑，介词可分为下面三类：

　　1)引导时间短语的介词：

　　at, on, in, during, before, after, over, from, following, by, till, until, towards, for, throughout, upon, since, pending, all through, prior to

　　2) 引导地点状语的介词：

　　in, at, across, to, down, under, near, between, over, from, into, through, onto, off, outside, out of, inside, within, beside, behind, below, among, beyond, against, around, before, up, ahead of, via, in front of, under, along, past, opposite, above, next to

　　3) 引导其他短语的介词：

　　by, with, about, except, like, of, according to, instead of, without, in, due to, because of, along with, as for, in spite of, on account of owing to, on behalf of, against, apart from, for, failing, plus, including, in regard to, with regard to