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一、介 词 介词和连词是高中英语学习的难点和重
点，由于这类词往往具有一词多义性，及一
义多词性，因而极易出错。由于汉语中对于 连词的要求与英语中表达习惯不同，因此， 在这方面考生容易忽略或掌握不透某些知识 点，这些应引起我们高度注意。
1、表示原因的介词：
for, at, on/upon, with, by, through, from, in, of
in, on, from, at, until, for, since, after, before
by, during, over, through, within, upon, till
13)Einstein almost knocked me down before _______he saw me. before 14)He had measured me _______I could get in a word. 当主句含有肯定式终止性谓语动 词时,只能用before不能用until,且 before常意为"没来得及……"或 "……才……"等。
from 表示自然的或直接的原因
2. 表示时间的介词 in, on, from, at, until, for, since, after, before by, during, over, through, within, upon 1) He came in 1958 and has stayed here since ______ then.
8)They are going to have a good rest during _______the summer holidays. through: 从开始到结束，他们打 了一整夜牌。
during: 在…期间，他们打算在暑 期好好休息。
in, on, from, at, until, for, since, after, before
for, at, on/upon, with, by, through, from, in, of on 3) He came to see me ____business. on 4) He came ____your invitation.
on/upon: (表示为某事物的 基础、根据或理由)由于，因 为 所表示的原因与条件直接 相关。
since, 自从…以来到现在，和完 成时连用。另外，since 还可以用 作副词，表达同样的意思。
in, on, from, at, until, for, since, after, before
by, during, over, through, within, upon 2)She went to Nanjing last May，and she after came back ____a month. after +时间常常和过去时连用，表 示一个时间点。如：after school, dinner, 3pm 等。
in, on, from, at, until, for, since, after, before
by, during, over, through, within, upon, till by 6)He had finished the work ___ten o'clock this morning.
1) He didn’t answer ____fear of hurting her for feelings.
for: 因为；由于某事物 多用于表示内 在的、心理的原因。 at 2) I’m much pleased ____your arrival. 多用来表示感情上的原因，常和表示 一定感情的词连用
by 不迟于；到…为止。后跟表示 过去的时间用过去完成时，跟将 来的时间用将来完成时。
in, on, from, at, until, for, since, after, before
by, during, over, through, within, upon, till
through 7)They played the cards ________the night.
in 10. The Democratic Party was then __power. in 11. They found the patient __a coma. in 12. He has not been __good health for some years. in in 13. Many who came __despair went away __ hope . in 14. The house was __ ruins. in 15. Today everybody is __ high spirits and no in one is __ low ebb.
for, at, on/upon, with, by, through, from, in, of
with 5) He was trembling ____fear. 6) His face turned red with ____anger. 多用来表示由外界影响到身心 的原因。 by 7) I met her quite ____ chance/accident. by 8) He got ill ___drinking too much yesterday.
by, during, over, through, within, upon, till
9)Scientists say that it may be five years before _______ it is possible to test this medicine on human patients. before: 过了多久以后才… “五年 以后才会在人体上做试验。
in, on, from, at, until, for, since, after, before
by, during, over, through, within, upon 3)They worked hard. They finished the work within days at last. _____2 in 4)They said they would arrive here ____a week.
in, on, from, at, until, for, since, after, before
by, during, over, through, within, upon, till
10)The plane takes off at 10:00, so you by must try to be at the airport ___9:30. by: 最迟在，不迟于，在…以前。 你必须在9基准，想将来延续，in an hour 是从现在起一个小时之后。
in, on, from, at, until, for, since, after, before
by, during, over, through, within, upon, till till 5)Never put off ____tomorrow what may be done today． during/over They didn't say a word ___________the meal． till直到…为止;during, over在…期 间。如：Are you staying here over Christmas?
3. 表示方向的介词 in, at, to, at 1)He rushed ___the woman with a sword. in 2)He rushed ___the direction of the small village. to 3)He rushed ___the women with a sword. rush at:朝着…扑去；in the direction of 朝着什么方向； rush to向这位妇女走去。
in, on, from, at, until, for, since, after, before
by, during, over, through, within, upon, till
11)The students won’t go home until / before ____________they finish their homework. 12)The woman worked in the factory until/before ___________1990. 在until能使用的句型中,即主句含 有否定式终止性谓语动词或肯定 式延续性动词,可与before直接替 换,意义差别不大。
因（某事物）所致；由于；凭借 通常用来表示由什么方式产生的
for, at, on/upon, with, by, through, from, in, of
from 12) Do you often suffer _____headache? 你常头疼吗？ from 13) He feels weak _____ lack of sleep. 他由于睡眠不足而虚弱。 from 14) The old man died _____the cold in the winter. 那位老人因为冬天的寒冷而死。
在表示权力，特征，心情，状态， 方面等前用in。
16. Did your supervisor like the story over (or on) ___________the radio last night? 17. Professor Shen will give us a talk on ___travelling in America. on 18. You are wrong ___all these issues. on 电视，广播，关于，依靠，基础， 故意，出差，上市，电话，左右 方向前用on。
