2012 届高考英语二轮语法复习学案(介词)介词又叫前置词,是一种虚词
介词分为三种,一种是简单介词,如 at, in, on, beside, to , for 等;另一种是短语介词,即由两个以上的词组组成的短语,如 in front of, because of, out of, instead of 等;还有一种叫二重介词,如 until after, from behind 等
(一)介词的句法功能介词不能独立在句中做成份,介词后必须与名词、代词、或动名词构成介词短语在句中充当一个成份,表示人、物、事件等与其它人、物、事件等之间的关系
1、作定语:The book on the table is mine
2、作状语:We have breakfast at seven
(表时间);They were late for meeting because of the heavy rain
(表原因);They started the mach ine by pressing the button
(表方法)3、作表语:My dictionary is in the bag
4、作宾语补足语:I found him in the office
(二)主要介词区别1、表示时间的 at, in, on:at 表示片刻的时间,如:at 8 o’clock ,常用词组有:at noon, at night, at midnight, at the end of, at that time, at the beginning of, at the age of, at Christmas, at New Year 等
in 表示一段的时间,如:in the morning, in the afternoon, in the evening, in October, in 1998