on表示某物体上面并与之接触。
例句:The bird is flying above my head.
There is a bridge over the river.
He put his watch on the desk.
(3)below, under 在下面
under表示在正下方
below表示在下,不一定在正下方
例句 There is a cat under the table.
Please write your name below the line.
二、表示时间的介词:
(1)in , on,at 在时
in表示较长时间,如世纪、朝代、时代、年、季节、月及一般(非特指)的早、中、晚等。
如:in the 20th century, in the 1950s, in 1989, in summer, in January,
in the morning, in the night, in ones life , in ones thirties等。
on表示具体某一天及某一天的早、中、晚。
如:on May 1st, on Monday, on New Years Day, on a cold night
in January, on a fine morning, on Sunday afternoon等。
at表示某一时刻或较短暂的时间,或泛指圣诞节,复活节等。
如: at 3:20, at this time of year, at the beginning of, at the end of ,
at the age of , at Christmas, at night, at noon, at this moment等。
注意:在last, next, this, that, some, every 等词之前一律不用介词。如:We meet every day.
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