in, at, on, before,after,till,since,for, fromto, until, by,in the middle of,at the beginning of, at the end of,at half past five,at night,in a week,in the morning,in class,at sunrise, in spring/summer/autumn/winter,on Sunday,on Saturday afternoon,on a winter evening,for a long time,for two months,after school,since liberation,before lunch,at the time of,at the age of
(2)表示地点的介词及介词短语
in,at,into,to,on,beside,before,behind,above,under,outside,inside,up,from,far,from,near,across, off, down, among, past,between,out of,around,in the front of, in the middle of, at the back of,at the foot of,at home,at the gate,at the table,in the sky, on the ground,in a tree, in the south,in the sun,in the bed,on one’s way home,by the side of
二、八 种 基 本 时 态
1. 一般现在时
概念: 表示经常发生的动作或经常存在的状态。
常和 always , often , usually , sometimes , every day 等表时间的状语连用。
如:1) I go to school every day . 我每天都去学校。(表经常)
2) He is always like that . 他总是那样。 (表状态)
构成: 1) 主语 be (am / are / is ) ……
2) 主语 实义动词/三单动词 …
2.一般过去时
概念: 1) 表示过去某个时间发生的动作或存在的状态.
常和表示过去的时间状语连用. 如: yesterday , last week , in 1998 , two days ago等.