英语介词是定义事物之间的空间位置、移动方向及时间关系的单词或词组。介词可表达抽象或具体的概念。英语的介词和其他语言比起来数量最多，而相似的介词之间又有微小的差异。本期文章将针对时间、地点和空间关系的介词作概述。

时间相关介词

“On” 用于星期：

• I will see you on Monday.
• The week begins on Sunday.

“At” 用于中午、晚上、午夜及一整天当中的某个时刻：

• My plane leaves at noon.
• The movie starts at 6 p.m.

“In” 用于某一持续的时段，例如：月、年或季节：

• He likes to read in the afternoon.
• The days are long in August.
• The book was published in 2023.
• The flowers will bloom in spring.

当一个时间有明确的起点、终点或区间时，可使用下列英语介词：“since、for、by、from... to...、from... until...、during、(with)in”。

• She has been gone since yesterday.
• I’m going to New York for two weeks.
• The movie showed from August to October. 
• The decorations were up from spring until fall.
• I watch TV during the evening.
• We must finish the project within a year.

地点相关介词

传达地点概念时，可使用英语“in” 来表达某个特定地点；“inside”表示“位于…里面”；“on” 表示“在…表面”；“at” 则表示邻近区域。

• There is a wasp in the room.
• Put the present inside the box.
• I left your keys on the table.
• She was waiting at the corner.

表达一个对象高于某个点的概念时，可使用英语介词：“over、above”。

• He threw the ball over the roof.
• Hang that picture above the couch.

表达一个对象低于某个点的概念时，可使用英语介词：“under、underneath、beneath、below”。

• The rabbit burrowed under the ground.
• The child hid underneath the blanket.
• We relaxed in the shade beneath the branches.
• The valley is below the sea-level.

表达一个对象靠近某个点的概念时，可使用英语介词：“near、by、next to、between、among、opposite”。

• She lives near the school.
• There is an ice cream shop by the store.
• An oak tree grows next to my house.
• The house is between Elm Street and Maple Street.
• I found my pen lying among the books.
• The bathroom is opposite that room.

英语中的动词词组是动词+介词形式。值得留意的是，不同动词一般都有固定的介词作搭配，例如：
At：glance、laugh、look、rejoice、smile、stare

• She took a quick glance at her reflection.（“Mirror” 为例外：She took a quick glance in the mirror.）
• You didn’t laugh at his joke.
• I’m looking at the computer monitor.
• We rejoiced at his safe rescue.
• That pretty girl smiled at you.
• Stop staring at me.

Of：approve、consist、smell

• I don’t approve of his speech.
• My contribution to the article consists of many pages.
• He came home smelling of alcohol.

Of (about)：dream、think

• I dream of finishing college in four years.
• Can you think of a number between one and ten?
• I am thinking about this problem.

For：call、hope、look、wait、watch、wish

• Did someone call for a taxi?
• He hopes for a raise in salary next year.
• I’m looking for my keys.
• We’ll wait for her here.
• You go buy the tickets and I’ll watch for the train.
• If you wish for an “A” in this class, you must work hard.

空间关系介词

空间关系介词用来表达句中主语的所在位置或是动作发生的位置。

Above

Write your name above the line.

Across

Draw a line across the page.

Against

She leans against the tree.

Ahead of

The girl is ahead of the boy.

Along

There is lace along the edge of the cloth.

Among

He is among the trees.

Around

Draw a circle around the answer.

Behind

The boy is behind the girl.

Below

Write your name below the line.

Beneath

He sat beneath the tree.

Beside

The girl is standing beside the boy.

Between

She is between two trees.

From

He came from the house.

In front of

The girl is in front of the boy.

Inside

He is inside the house.

Nearby

There is a tree nearby the house.

Off

His hat is off.

Out of

He came out of the house.

Through

She went through the door.

Toward

She is walking toward the house.

Under

He is hiding under the table.

Within

Please mark only within the circle.

以上介绍了常用的介词来表达时间、地点和空间关系的概念以及需注意的要点，希望对您的学术写作有所帮助。