常用易混淆介词辨析

常用易混淆介词辨析

1、 after/ in 皆可表示时间在……之后，其区别为：

after 1）表示“在某点时间之后”，用于将来时。如：

We’ll go out for a walk after supper.

2）表示“一段时间之后”，用于过去时。如：

My mother came home after half an hour.

in表示“一段时间之后”，用于将来时。如：

We’ll go to school in two weeks.

2、at/in/on

at seven o’clock（具体某一时刻用at）

in April /in April,2002（具体某一月份或年份用in）

on April 5,2002/on the morning of Monday（具体某一天用on）

3、in /by /with

He writes in black ink.（用……材料）

The guard cut one boot open with a knife.（用……工具）

She always goes to school by bike.（用……手段）

4、between /among

Can you say the differences between the two words?（两者之间）

Premier Chou En-lai lives among the people for ever.（三者或三者以上）

5、besides /except

We have seen the crocodile besides Lifang.（除……之外，还有）全部计算在内

We are all Chinese except Tom in our class.（除……之外）不计算在内

6、on /over/ above

There is a boat on the desk（在某物面上，与此物接触。）

There is a bridge over the river.（在某物正上方，与此物不接触，或横在某物上，或覆盖在某物上。）

She spread a cloth over the table.

He held his heads above his head. （“在……上”，强调“高于。”）

7、on/ in / to

Mongolia is on the north of china.（与中国接壤，不属于中国）

Japan is to the east of china.（不属于中国，且不接壤）

Taiwan is in the east of China.（台湾属于中国）

8、since /for

since 表示从过去某一时间以来

for 表示一段时间

I have been living here since 1982.（自1982年以来，我一直住在这里）

I have been living here for 20 years.（我已经在这里住了20年了）

9、of /from

The desk is made of wood（看得出材料）

Paper is made from wood.（看不出材料）

The bread is made up of flour, sugar and milk.（由数种成分组成）

10、by /on

He used to go to school by bike.（抽象概括）

He came to school on this bike yesterday.（具体到哪一辆车）

11、of /for

It’s kind of you to come to see me.（既说明不定式本身特点，又说明逻辑主语的品性）

It’s important for you students to learn English well.（只说明不定式本身的特征）

12、of /in

This is the most interesting of all the stories.（从个体的集体着眼）

China has the largest population in the world.（从总体概括着眼）

13、of /about /on表示“谈及，论述”

Do you know of American singer John Denver?（涉及浅层关系）

I have never heard about him.（表示谈论等深一步的关系）

This book is on grammar.（以……为主要内容）

14、through /past/across

The new railway runs through the small town.（穿过）

He walked slowly past the tall building.（从旁边经过）

Mary walked across the park to do some shopping.（强调从一边到另一边）

15、by/ with通过……手段

We write with a pen.（表示较具体的事物）

There’s nothing to gain by waiting.（表示抽象）

16、despite = in spite of（介词） / although（连词）

despite 是介词，后面接名词或动名词，不能跟句子

although是连词，后面要跟句子。

Although I was ill yesterday, I still went to school.

Despite failure in the exam, I still have a chance to win in the term.

17、as /like

as 1）用作介词时意思为“作为……，充当”如：

She acted as an interpreter.

2）用作连词时意思为“像……一样；当，由于”

As it was cold, I didn’t go outside.

like 用作介词，意思为像……一样

John sings like a nightingale.

18、by day（指白天）/ by the day（按日计算）

I worked here by day and I am paid by the day.

worth 的用法

worth，worthy，worth-while都为adj. 意为"值得"。

1. worth： be worth + n. 当名词为金钱时，表示"…… 值得……"

be worth doing sth. "……某事值得被做"

The question is not worth discussing again and again.

2. worthy：be worthy of +n. 当名词为抽象名词时表示"……值得……"

be worthy to be done "某事值得被做"

The question is not worthy to be discussed againand again.