ACT考试语法：介词Over/Off/as解析

>>ACT考试词汇：ACT考试语法：介词Over/Off/as解析

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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。使用时要注意首个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.

语法和词汇是考试的基础，因为ACT这个考试不只考察考生的综合能力，还对中学知识的要求很高，多以这个成绩对你们未来的发展都是起到很重要的作用的。还想了解ACT考试技巧的话，赶紧关注坦途网ACT考试频道吧，相信这里的内容会让你有很大感触的！