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in on at for to用法上的区别

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in on at for to用法上的区别
例如:on Monday
for two hour
in on at for to用法上的区别
一.in,to,on和off在方位名词前的区别
1.in表示A地在B地范围之内.如:
Taiwan is in the southeast of China.
2.to表示A地在B地范围之外,即二者之间有距离间隔.如:
Japan lies to the east of China.
3.on表示A地与B地接壤、毗邻.如:
North Korea is on the east of China.
4.off表示“离……一些距离或离……不远的海上”.如:
They arrived at a house off the main road.
New Zealand lies off the eastern coast of Australia.
二.at,in,on,by和through在表示时间上的区别
1.at指时间表示:
(1)时间的一点、时刻等.如:
They came home at sunrise (at noon,at midnight,at ten o’clock,at daybreak,at dawn).
(2)较短暂的一段时间.可指某个节日或被认为是一年中标志大事的日子.如:
He went home at Christmas (at New Year,at the Spring Festival,at night).
2.in指时间表示:
(1)在某个较长的时间(如世纪、朝代、年、月、季节以及泛指的上午、下午或傍晚等)内.如:
in 2004,in March,in spring,in the morning,in the evening,etc
(2)在一段时间之后.一般情况下,用于将来时,谓语动词为瞬间动词,意为“在……以后”.如:
He will arrive in two hours.
谓语动词为延续性动词时,in意为“在……以内”.如:
These products will be produced in a month.
注意:after用于将来时间也指一段时间之后,但其后的时间是“一点”,而不是“一段”.如:
He will arrive after two o’clock.
3.on指时间表示:
(1)具体的时日和一个特定的时间,如某日、某节日、星期几等.如:
On Christmas Day(On May 4th),there will be a celebration.
(2)在某个特定的早晨、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.