急!英语的介词,什么词什么词的,谁能提供初2年级要学的?答:1.表示时间的介词及介词短语� 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...