ACT介词解析—Over/Off/as的用法
ACT考试每年举行6次,具体时间分别是2月、4月、6月、9月、10月和12月;其中2月考试只在北美地区举行。
据ACT考试的主办方负责人透露,为了在中国进行ACT考试的推广,ACT方面已经在中国的一些大城市设置了教学考试中心。并将在年内在国内的北京、上海、沈阳、青岛、大连、成都、广州,哈尔滨,西安等城市设置相关的考场,为考生参加ACT考试提供更大的便利。
ACT考试由美国大学测验组织机构ACT主办。ACT考试均不是单纯的语言考试,而是对学生综合能力的测试。考试重视学生对基础课程的掌握并检查学生一般学术能力,难度贴近高中生。必考科学为四个部分:英语、数学、阅读、科学,全部为选择题,共215道。总分36分,考试时间共175分钟。
ACT考试不分I和II。它包括四个部分:数学、英语、阅读、科学推理。这里值得一提的是科学推理,这部分整合高中、初中物理,化学,生物,语文,英语口语,笔试等学科,综合在一张卷子上,以推理题目的形式出现。出题方式比较灵活,考验对高中知识的掌握和逻辑能力。「ACT Plus Writing」则为上述四个科目外再加上一个30分钟的作文测试。所有美国4年制学院及大学均接纳ACT的成绩。正因为ACT是一个以课程为本的考试,许多要求SAT Subject Tests成绩的大学,都会完全或部份豁免ACT考生有关的要求。
今天老师为大家介绍一下ACT介词(Over、Off、as)的用法。

介词
介词在英语中一直扮演者中介和连接的角色,介词虽少,但在表达句子意思上一直发挥着不可忽视的作用。同样,在 ACT English 考试中,介词也是 ACT 考察的一个重点,一般来说,ACT 主要考察句中介词的准确性。
Over用法
1)介词
在...的上方
= above or higher than sth, whithout touching
e.g. a book hung over the desk
覆盖在...的上面
= On sth or covering sth.
e.g. she wears a coat over a sweater
2)形容词
倒下(的)
E.g. knock the candles over
结束
E.g. the affair is over
3) 副词
A) E.g. fall over
(fall over是向前摔倒;fall down没有向前的含义,指的是摔下来,比如fall down from the tree)
B) 越过;经过
E.g. Fly over
C) E.g. Come over
(come over 意思比较多,大概可以归纳为:
1.在上方经过 (意思同上fly over)
e.g. planes are coming over all the time.
2. 过来; 从远处来
Come over! Here's a seat for you.
3. 顺便来访
You really must come over sometime and have dinner with us.
4. 被理解并完全接受; 被通过
Did his speech come over?
5.逐渐变得
The sky came over dark as a thick cloud passed before the sun..
6.突然感到
She suddenly came over dizzy and had to lie down. ) D) 弯折;弯腰e.g. bent over ; Fold the paper over E) =throughout an area/time/body... E.g. all over the world Be happy over the weekendThe flower is watered all over.
Off 的用法
1)副词
A 离开;离去 = away from a place
e.g. drives off at 5 o’clock
turn off to a side road
B 移开;剥离
e.g. break off a piece of orange
C 清除
e.g. pay off the bills
D 取消;停止
e.g. Call off the meeting
e.g. Turn off the light
2)介词
A 从某物上移开、剥离;偏离
e.g. Keep off the grass.
His hat fell off the head.
get off a bus
discuss off a topic
B 不再喜欢; 不再使用
e.g. I feel much better and take myself off the medicine.
I am off books now.
C 下班
e.g. off work
D 低于;折扣
e.g. 30% off the price shown
E 表示距离
e.g. The city is a mile off.
3)形容词
A 有失水准的;发挥不好的;萧条的
e.g. an off day
an off season
B变质
e.g. The food has gone off
C 休假
Take one day off
D 切断的;断电的、没电的
e.g. The electricity is off.
The phone is off
4)名词
A 开始;出发
e.g. She is ready for the off.
5) 词组搭配用法
A be well/badly/better off
表示经济状况比较好/坏
e.g. Employees will be better off with a new boss coming in.
B be better/worse off
表示总体情况会变好/坏
e.g. I will be better off without you.
C be off for sth
某物还剩…
e.g. How are we off for the water?
D on and off
=from time to time
不时地;时常地
e.g. She played music on and off all day.
as的用法
1)介词
=作为
e.g. He came to China as a tourist five years ago.
As a young adult, he used to stay up late.
2)连词
a) =当…的时候
e.g. You will grow wiser as you grow older.
注意:区别于when,when引导的时间状语从句的动作可以与主句的动作同时发生,也可以先于主句的动作发生;as强调主句和从句的动作同时发生.
b) =因为,由于
e.g. As rain has fallen, the air is fresher.
注意:区别于because & since: because表示的语气最强;as一般放在句首,语气较弱,较口语化;since常常用在书面语中,表示多为对方已知的、或稍加分析便可得知的原因,有时可译作"既然"。
对比:He will succeed because he is so hard-working.
Since you don’t earn much money from part time job, you should not make the purchase.
c) =尽管
Strange as it may seem, nobody was there when the accident took place.
注意:区别于although:although语气稍正式些,主句中不能再用but,但可以用yet;as所表示的语气较强,引导的让步状语从句用倒装语序。
对比:Although he is quite old, he still jogs every day.
d) =像;正如
e.g. Please offer them help, just as they supported you.
Do as a I say.
3)副词
=equally(同样地)
e.g. They don”t have as many airplanes.
特别注意:as...as意为"和……一样",表示同级的比较。使用时要注意第一个as为副词,第二个as为连词。其基本结构为:as+ adj./ adv. +as。
e.g. This story is as interesting as that one.
His pen writes as smoothly as mine.
4)代词
作为关系代词,引导定语从句
e.g. This is the same book as I read last week.
I don’t like such a man as she always mentions.
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