<div>英语on,at,in这三个常用介词都可以表示时间和地点,但具体用法不同,很多人会对它们混淆不清。今天来看看三者的区别。</div><div>on,in,at表示时间</div><div>on“在具体某一天”</div><div>① “当某时”,动名词, arrival,death前;early,late位句先</div><div>② 用in一般“上”“下”“晚”;on用于天,in用于月、季、年</div><div>③ 限定三时in要变。</div><div>④at是个时间点,“工作”“时刻”与“圣诞”</div><div>⑤ at noon(night),in the day,习惯用语记心间。</div><div>注:①on表示在具体某一天及具体某一天的上午、下午和晚上。</div><div>例:On mother's Day, we should send flowers to our mother. 母亲节,我们应该送花给我们的母亲。</div><div>On my arrival home,I found he had gone already.当我到家时,我发现他已经走了。</div><div>② 当early,late用于句首修饰介词短语时,尽管表示具体某一天的上午、下午、晚上,都要用in,泛指一般的上、下午,晚上也用in 。</div><div>例: Early in the morning of National Day,I got up to catch the first bus to the zoo.</div><div>国庆节一清早,我便起床去赶到动物园的第一班公共汽车。</div><div>My father begins work at 8:00 in the morning and stops work at 4:00 in the afternoon. 我父亲上午8点上班,下午4点下班。</div><div>③于将来时态表示“过一段时间后” 及表示“在……期间” 和“在某个季节,某年、某月” 都用in。 例 I hear he’ll be back in a month.我听说他将于一个月后回来。</div><div>In the course of the last lesson in French,little Franz was listening to the master very attentively.在那最后一堂法语课中,小弗朗兹非常用心地听着老师讲。</div><div>Xiao Ming was born in December of 2004. 小明生于2004年12月。</div><div>④当 morning,afternoon,evening有前位定语或后置定语限定时,就不用in而用on。</div><div>例 on a hot (summer) noon 在一个炎热(夏天)的中午</div><div>on Monday morning 在星期一上午</div><div>on the morning of March 8th在3月8日上午</div><div>⑤ 表示某时某刻及在work,Christmas前用at.</div><div>例 We get up at eight o’clock. 我们8点起床。</div><div>My father are busily at work all day. 我父亲整天忙于工作。</div><div>In western countries children get present from their parents at Christmas.</div><div>在西方国家,孩子们在圣诞节得到父亲给的礼物。</div>