第 4 讲 介词1. I always wanted to do the job which I'd been trained ______. (2011 浙江卷) A. on B. for C. by D. of【答案及解析】1. B 本题考点为介词与动词的搭配。句意为“我总想从事我一直以来为此被训练的工作。”还原定语从句部分，应该是“I'd been trained for the job”。 train作动词意为“训练”，介词 for 表目的。2. I guess we've already talked about this before but I'll ask you again just ______. (2010 浙江卷) A. by nature B. in return C. in case D. by chance【答案及解析】2. C 考查介词短语的辨析。句意为“我觉得我们以前已经谈论过这件事情了，但是以防万一，我还是再问你一次吧。”by nature 天生地，天然地；in return 作为回报；in case 以防万一；by chance 偶然地，碰巧。介词的种类 介词又叫前置词，是一种虚词。介词分为三种：简单介词，如 at, in, on, beside, to, for 等；短语介词，即由两个以上的词组成的短语，如 in front of, because of, instead of 等；二重介词，如 until after, from behind 等。介词的句法功能 介词不能独立在句中作成分，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分，表示人、物、事件等与其他人、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 machine by_pressing the button. (表方式) 3．作表语：My dictionary is in_the_bag. 4．作宾语补足语：I found him in_the_office. 用心 爱心 专心1主要介词区别1．表示时间的 at, in, onat 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 等。in 表示一段时间，如：in the morning/ afternoon/ evening, in October, in 1998, in summer, in the past, in the future 等。on 总是跟日子有关，如： on Monday, on Christmas morning, on May Day, on a warm morning 等。2．表示时间的 since 和 fromsince 表示从过...
