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1、复习初中英语语法 介词用法口诀大全3初中英语语法 介词用法口诀大全3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
2、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 cant 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 fo
3、od( 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 (=boiling). 让水壶的水一直开着。 The enemy are on the run (=running). 敌人在逃跑。On 后接 the 加上一个作名词的动词(其意义与现在分词所表达的相近。类似例子很多如: on the march 在行军中，on the mend 在好转中，on the prowl 徘徊，on the move 活动中，on the
4、 scrounge 巧取豪夺(俚语)，on the go 活跃，忙碌，on the lookout 注意, 警戒，on the watch 监视着。on the hop 趁不备抓住某人等等。 on the Peoples Democratic Dictatorship 和 on the Peoples Democratic Dictatorship “on Coalition Government” 着、罢、出售、偷、公、假，故意、支付，相反、准注:口诀中的“着”是指着火，“罢”指罢工，“偷”指偷偷地，“公”指出差、办公事;“假”指休假，“准”指准时。例:The house next to m
5、ine was on fire. 我邻居的房子着火了。 The workers of the railway station were on strike. 铁路工人罢工了。 Grapes and big water melons from Sinkiang are on sale on a large sale. 新疆葡萄和西瓜大量上市了。 Do something on the sly (quiet). 秘密地(暗地里，偷偷地)做某事。 Ive come here on business. 我是有公事来的。They went to Bern on a mission. 他们到伯尔尼去执行一
6、项使命。 They have been away on a long trip. 他们出去做一次长途旅行。 Ill go home on leave next month. 下月我将休假回家。I went on business to Shanghai. I did not take leave. 我是公出去上海的，不是不告而别。 She came to see you on purpose. 她是专程来看你的。He came here on purpose to discuss it with you. 他到这来是要与你讨论这件事的。 “This lunch is on me.”“这顿午饭我
7、付钱。”“No. lets go Dutch.”“不，还是各付各的。”On the contrary, it was very easy to understand. 相反，这事儿很容易理解。 P1ease come on time. (on schedule). 请准时来。注:in time 是“及时”的意思。 The train arrived on schedule. 火车准时到达。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。(特定时间) On entering
8、 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。 Ill write to him on hearing from you. 我接到你的来信就给他写信。(一就) 以及 on the left, right 向左向右，on the stair 在台阶上等。 步行、驴、马、玩笑 on，cab，carriage 用 in 例:On foot 步行; on horse 骑马;
9、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
10、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。 Whos standing there
11、 at the door? 谁站在门口?I dont 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
12、 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
13、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.战士们在日落时对敌人发起了攻击。 at daybreak 日出时 The force at the core leading our cause forward is the Chinese Communist Party. 领导我们事业的核心力量是中国共产党。 The atom has a nucleus at its core.
14、 在原子的中心有一个原子核。 At the beginning of this term the teacher in charge of our class was very strict with us. 这学期开始，我们的班主任老师对我们要求非常严格。 以及 At the first session of the First National Peoples congress of the Peoples Republic of China. 在中华人民共和国第一次全国人民代表大会第一次会议上. 常用的 at 短语有: at first 首先，开始时 at least 至少 at all
15、 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 （2）圆周角定理:圆周角的度数等于它所对弧上的的圆心角度数的一半.at liberty
16、有权，随意 对称轴：x=at the sight of 一见到 和三角形各边都相切的圆叫做三角形的内切圆,内切圆的圆心叫做三角形的内心.at the point of 接近，靠近 函数的取值范围是全体实数；at the thought of 一想到 at the speed of 以速度 at the cost (price) of 以为代价 at leisure 闲着、失业 at the disposal of 任凭使用 当a0时，抛物线开口向上，并且向上方无限伸展。当a0时，抛物线开口向下，并且向下方无限伸展。at stake 在危险中、在成败关头 如果圆的半径为r，点到圆心的距离为d，则at bottom 实际上、本质上 at short notice 一得到通知 5.二次函数与一元二次方程at seeing us 看到我们 at the happy tidings 听到喜讯 A、当a0时at sixteen 在16岁时 at the present stage 在现阶段 (3)边与角之间的关系：at the weekend 周末 定义：在RtABC中，锐角A的对边与邻边的比叫做A的正切，记作tanA，at all times 永远 at 405 Victory Road 在胜利路405号