摘要：A.He presented a pistol at me. 他用手枪对着我. B.He presented a pistol to me. 他赠送我一支手枪. 2010-3-6 11:54 回复 啓点妞妞 3354位粉丝 12楼 日子.日期.年月日.星期加上早午晚; 以下皆用 on. 例: on October the first 1949 1949年10月1日 on February the thirteenth l893 1893年2月13日 on May the first 5月1日 on the first 1号 on the sixteenth 16号 on the second of January 或 on January the second 1月2日 on a summer evening 在夏天的一个夜晚 on Boxing Day 在节礼日 on New Year's Day 在元旦 on my birthday 在我的生日 但 in the Christmas holidays 在圣诞节假期; in the eighteenth century 在十八世纪; in ancient times 在古代; in earlier times 在早期; in modern times 在现代.则用 in.at the present time 现在.at the present day 当今 则用 at. on May Day 在“五·一 节 on winter day 在冬天 on December 12th 1950 l950年12月12日 on Sunday 在星期天 on Monday 在星期一 on Tuesday morning 星期二早晨 on Saturday afternoon 星期六下午 on Friday evening 星期五晚上 但 last night 昨夜;in the evening 在晚上; on time 准时.in time 及时.等则不同. 年月日.加早午晚.of 之前 on 代 in 例:on the morning of 18th 18日早晨 on the evening of 4th 4日晚上 On the eve of their departure they gave a farewell banquet and their head gave a farewell speech. 他们在临行前夕举行了一次告别宴会.他们的团长发表了告别讲话. 2010-3-6 11:54 回复 啓点妞妞 3354位粉丝 13楼 收音.农场.值日 on 例:Did your supervisor like the story over the radio last night? 您的导师喜欢昨天从收音机里听到的故事吗? I heard the news over the radio. 我从收音机里听到了这一条消息. talk over the radio 由无线电播音 on TV 从电视里-- hear something on the wireless 在无线电里听到 My brother works on an Army reclamation farm. 我哥哥在一个军垦农场工作. The students are working on a school farm. 学生们正在校办农场劳动. This is a farmer's house on a farm. 这是农场的农舍. Who is on duty, today? 今天谁值日? We go on duty at 8 a.m. 我们上午8点钟上班. 关于.基础.靠.著论 例: This afternoon we are going to listen to a report on the international situation. 今天下午我们要听关于国际形势的报告. Professor Shen will give us a talk on traveling in America. 申教授将给我们做关于美国之行的报告. You are wrong on all these issues. 在这些问题上你的看法都错了. The belief is based on practical experience. 这种信念是以实际经验为基础的. Theory must be based on practice. 理论必须以实践为基础. The people in the south live on rice. 南方人主食大米.(靠) The citizens live on their salaries. 城市人靠薪金生活. You can't afford luxuries, on an income of 100 yuan a month. 靠月薪100 元的收入.你是买不起奢侈品的. Her pet dogs were fed on the choicest food. 她用精饲料喂养她心爱的狗. He is just a scrounger, who lives on other people. 他正是一个小偷.专靠损害别人过日子. Keep the kettle on the boil . 让水壶的水一直开着. The enemy are on the run . 敌人在逃跑. 2010-3-6 11:54 回复 啓点妞妞 3354位粉丝 14楼 特定时间和“一--就 .左右 on 后动名词 例:Gases expand on heating and contract on cooling. 气体加热时膨胀.冷却时收缩. On entering the room, he found his friends dancing in high spirits. 一进屋.他就发现他的朋友们在愉快地跳舞. On reaching the city he called up Lao Yang. 一到城里他就给老杨打了一个电话. I'll write to him on hearing from you. 我接到你的来信就给他写信. 以及 on the left, right 向左向右.on the stair 在台阶上等. 2010-3-6 11:55 回复 啓点妞妞 3354位粉丝 15楼 步行.驴.马.玩笑 on.cab.carriage 用 in 例:On foot 步行; on horse 骑马; on donkey 骑驴. He rode on, blood flowing from his side. 他骑着马.鲜血从腰部流下来. The soldier of the Eighth Route Army rode 100 li on a horse a day in order to catch up with his unit. 为赶上部队.那位八路军战士骑马日行百里. Go on horse back! 骑马去! You are having me on! 你和我开玩笑呢! in cab 和 in carriage 不能用 on 或 by cab 或 carriage. 2010-3-6 11:55 回复 啓点妞妞 3354位粉丝 16楼 步行.驴.马.玩笑 on.cab.carriage 用 in 例:On foot 步行; on horse 骑马; on donkey 骑驴. He rode on, blood flowing from his side. 他骑着马.鲜血从腰部流下来. The soldier of the Eighth Route Army rode 100 li on a horse a day in order to catch up with his unit. 为赶上部队.那位八路军战士骑马日行百里. Go on horse back! 骑马去! You are having me on! 你和我开玩笑呢! in cab 和 in carriage 不能用 on 或 by cab 或 carriage. at 山脚.门口在当前.速.温.日落价核心 即在山脚下.在门口.在目前.速度.以--速率.温度.在日落时.在--核心要用at. 例:At the foot of the mountain, there are thirty of our comrades. 在山脚下.有我们30 个同志. There is a beautiful lake at the foot of the hill. 山脚下有一个美丽的湖. At the gate of the house there are many children playing glass ball. 门口有一大群孩子在玩玻璃球. Who's standing there at the door? 谁站在门口? I don't need the dictionary at present. 我现在还不需要这本词典. He is at present in Washington. 他目前正在华盛顿. The train runs at fifty kilometres an hour. 火车每小时行驶50 公里. We built the plant at top speed and minimum cost. 我们以最低的投资.最高的速度修建了该工厂. at home 在国内.在家里 at ten degrees centigrade 在摄氏10 度 at minus ten degrees centigrade 摄氏零下10 度 Water freezes at 0°centigrade. 水在摄氏零度结冰. Water usually boils at 100°. 水通常在摄氏100 度沸腾. at zero 在零度 at the rate of 45 miles an hour at full speed 全速 at a good price 高价 at a low cost 低成本 at a great cost 花了很大代价 at that time 在当时 Evaporation takes place at all temperatures. 蒸发在任何温度下都能发生. at 1000 RPM (revolution per minute) 每分钟1000 转 at a high speed 高速 The soldiers launched an attack upon the enemy at sunset. 2010-3-6 11:56 回复 啓点妞妞 3354位粉丝 17楼 常用的 at 短语有: at first 首先.开始时 at least 至少 at all events 无论如何 at home 在家.无拘束 at one stroke 一下子 at a loss 不知怎办 at any rate 不管怎样 at length 详细地 be at high tide 处于高潮期 at our invitation 应我们的邀请 at our request 应我们的请求 at the news 听到这消息 at the risk of 冒--危险 at a great expense 以巨大费用 at a stroke 一举 at intervals of 每隔 at liberty 有权.随意 at the sight of 一见到 at the point of 接近.靠近 at the thought of 一想到 at the speed of 以--速度 at the cost of 以--为代价 at leisure 闲着.失业 at the disposal of 任凭--使用 at stake 在危险中.在成败关头 at bottom 实际上.本质上 at short notice 一得到通知 at seeing us 看到我们 at the happy tidings 听到喜讯 at sixteen 在16岁时 at the present stage 在现阶段 at the weekend 周末 at all times 永远 at 405 Victory Road 在胜利路405号

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