时间介词的用法
时间介词,包含时间点和时间段两子类。 1. 表示时间点。常用介词on, in, at. at:用于很短的时间和准确的数字前面。例如: a. 用于具体的钟点前: at 10:00; at 5:45 b. 用于短暂的时刻前: at noon/ night/ midday/ midnight; at dusk(黄昏)/ sunset; at dawn(黎明)/ sunrise/ daybreak (黎明) c. 用于进餐的时间前: at breakfast/lunch/supper(在早餐时/午餐时/晚餐时) d. 用于年龄前面: at 14 =at the age of 14 e. 用于一些固定搭配中: at Christmas ·at New Year; at Thanksgiving(感恩节) at first(起初) ·at last(终于); at the moment此时此刻; at that/this time; at this time of last summer; at a good/bad time of year; at the beginning/end of this month; on:用于某天或者某几天。例如: a. 用于日期前: on May 20th; on September 10th; on the morning of October 1, 1997; on the first day of summer holiday; on a sunny morning. b. 用于星期前: on Saturday; on Sundays/weekdays/weekends on Monday morning; on the afternoon of Thursday on weekends = on the weekend = at weekends c. 用于节假日前: on Teachers’ Day; on Christmas Day/Eve; on National Day; on Tom’s birthday 注意: 1.on holiday; on vacation: on表示正处于,正在进行中。 2. at: 指前后一段较短时间; at New Year(在新年期间) at Christmas (在圣诞节期间) on: 指就在这一天; on New Year’s Day(在元旦那天) on Christmas Day (在圣诞节) in: 表示一段较长时间内。 a. 用于泛指一天的上午、下午、傍晚: in the morning/afternoon/evening b. 用于某个较长的时间: 年/月/季节 ·in May; ·in spring; ·in 2020; in the 21st century · in the 2010s; in Tom’s fifties 注意: in the morning 指的并不是在某天的早上,而是每天早上。泛指、具有普遍性。 具体的某天早上必须用介词on: on Saturday morning = on the morning of Saturday on the morning of teachers’ day; on the morning of may 12th; on a warm sunny morning in the beginning/end: 泛指事情开始的开头/结尾,如果涉及到具体某件事,就必须用介词at: at the beginning/end of….在…开始/结束时。 2. 表示时间段。常用介词: during, ago, later, in, for, within, over during: 持续、贯穿一段较长的时间= throughout; throughout: 贯穿始终,是during的强调形式。 in: 仅仅表示在这段时间内,可能是某一天,可能是某一周,时间长短无法确定。 during 1942: 在1942年一整年; in 1942: 在1942年这一年; during the summer: 在整个夏天; in summer: 在夏天 during his childhood: 在他整个同年; in his childhood: 在他小时候 for: 在一段时间内持续进行,与延续性动词连用: for a whole day; for 2 weeks; for 3 months; for 5 years; for ever: 永远 within= in: 在这段时间之内。within 5 days; within a month |