表示时间的介词和频度副词

时间介词(at, in ,on) 得用法

1.at

(1)时间得一点、时刻等。如:

’clock、

(at night, at noon, at midnight, at ten o’clock, at daybreak, at dawn)、

(2)后面接表示岁数得词。

、

(3)较短暂得一段时间。可指某个节日或被认为就是一年中标志大事得日子。如:

、

2、 in

(1)在某个较长得时间()内。如:

in 2004, in March, in spring, in the morning, in the evening, etc

(2),常用于将来时。

He will arrive in two hours、

These products will be produced in a month、

3、 on

(1)具体得时日与一个特定得时间,如某日、某节日、星期几等。如:

On Christmas Day(On May 4th), there will be a celebration、

(2)在某个特定得早晨、下午或晚上。如:

He arrived at 10 o’clock on the night of the 5th、

(3)准时,按时。如:

If the train should be on time, I should reach home before dark、

表示频率得副词用法详解

一、常见得频率副词

always,usually,often,sometimes, seldom,never、

1) always表示得频率为100%,意思就是"总就是、一直、始终"。

I always do my cleaning on Sundays、我总就是在星期天搞卫生。

2)usually与always相比,表示得频率要低些,约为70%-80%。意思就是"通常"。

Plants are usually green、植物通常就是绿色得。

Usually she goes to work by bus、她通常乘公共汽车去上班。

3)often得频率比usually又略低些,约为60%-70%,意思就是"经常"、"常常"。

Do you often write to them? 您常给她们写信吗？

Does Fred e here often? 弗雷德常来这儿吗？

4)sometimes得频率比often又低些,约为50%＞sometimes＞30%,意思就是“有时、不时”。Jenny usually eats a sandwich for lunch、Sometimes she eats soup、

5)seldom 得频率比sometimes还要低些约为20%左右,意思就是“很少”。

My father was seldom at home on Sundays、我父亲星期天很少在家。

6)never与always完全相反,就是100%否定,意思就是“从不,决不,总就是不“。

I can never stop、我绝不会停止。

Li Ming never wears dresses、李明从不穿裙子。

I would never do anything to hurt him、我绝不会做任何伤害她得事情。

二、频率副词示意图

三、频率副词在句中得位置

通常频率副词放在行为动词之前, be动词,情态动词或助动词之后。但就是sometimes最活跃。它既可以在句中也可以在句首,还能在句末。其它词如often 也可以放在句中也可以放在句末,这里就不一一列举了。

四、注意得问题

always得完全否定形式就是never,部分否定形式就是not always、例如:She always wears

a dress、她总穿裙子。(改否定句)

1)She never wears a dress、她从不穿裙子。(彻底否定)

2)She does not always wear a dress、她不总穿裙子。(部分否定)

有如:The rich are not always happy、富有未必就是幸福得。

时间介词用法练习:

( ) 1、Children get gifts ____ Christmas and ____ their birthdays、

A、on; on

B、at; on

C、in; in

D、in; on

( ) 2、----There is nothing ____tomorrow afternoon, is there?

-----No、We can have a game of table tennis、

A、on

B、in

C、out

D、up

( ) 3、A lot of students in our school were born____March, 1981、

A、in

B、at

C、on

D、since

( ) 4、He suddenly returned____ a rainy night、

A、on

B、at

C、in

D、during

( ) 5、My grandfather was born____Oct、10, 1935、

A、on

B、in

C、at

D、of

( ) 6、The train is starting___five minutes、

A、in

B、at

C、for

D、still

( ) 7、Mike does his exercises ____ seven _____ the evening、

A、on; to

B、at; in

C、by; of

D、at; on

( ) 8、Children wake up very early____the morning of Christmas Day、

A、in

B、on

C、for

D、at

( ) 9 ____ a cold winter morning, I met her in the stfeet、

A、In

B、On

C、At

D、For

( ) 10 It happened to be very cold____ the morning of our sports meeting、

A、at

B、on

C、with

D、of

( ) 11、Why did you get up so early ___ this morning、

A、on

B、/

C、at

D、in

( ) 12、He went to Shanghai___ September 3, 1991 and came back___ a cold morning last year、

A、in; on

B、on; in

C、on; on

D、in; ia

( ) 13、Lucy was born____ the night of May 12, 1984、、、、、