Unit 4 Grammar 课件2024-2025学年牛津译林版英语七年级上册

Unit 4 School days Grammar Learning objectives: 1. To understand and master the usages of prepositions of time and adverbs of frequency. 2. To talk with your partner about your school life using prepossitions of time and adverbs of frequency correctly. 3. To finish some exercises. Lead-in 你能发现这些句子中时间前介词的用法吗？ Lead-in 我们可以在不同的时间前面使用in、on或at，来表示做某事的时间。 Let’s learn 一天的某段时间 （上午、下午、晚上） 月份 季节 年份 Let’s learn 十二月份的英文表达： 一年四季的英文表达： spring summer autumn winter Let’s learn 星期 日期 特定某一天的某段时间（上午、下午、晚上） 特定的节日 一周七天的英文表达： 如果节日不止一天，而是持续一段时间，介词应用at. 如： at the Spring Festival、 at Christmas。 Let’s learn 一天中的某个时刻 年龄 in、on、at作为时间介词的使用，你能区分开吗？让我来测验一下你们吧！ Let’s try In on in on at On at 一天的某段时间 一天的具体时刻 星期 特定某一天的某段时间 月份 日期 一天的具体时刻 Let’s try 从下列选项中选出最正确的一项 1. Chunfen－the fourth solar term(节气) of the year－starts______ March 20th this year. A. in B. at C.on D. by 2. Mingming will have a class meeting _______ 3:30 this afternoon. A. on B. in C.at D. with 3. ______ Spring, the days are often windy and bright. It is a perfect time to fly a kite. A. On B. In C.At D. With 4. My mother often wakes me up_____ 8:00_____ Sunday morning. A. in;at B. at;in C.at;on D. in;on Let’s try 用适当的介词填空 1. Shenzhou XV crew members, Fei Junlong and Zhang Lu, took their sapcewalk _______ April 15th, 2023. 2. Children always give their mothers flowers _____ Mother´s day. 3. He was born _____ a cold evening in 1999. 4. _____ summer, we like going swimming in the pool. 5. We often do after-school activities_____ 5 p.m. ____ weekdays. 6. Sandy goes to the Computer Club _____ Fridays. on on In at on on on Let’s summarize 巧学妙计 介词in/on/at 年月季前要用in, 日子前面却不行。 遇到几号要用on, 上午下午又是in。 要说某日早中晚，用on换 in 才能行。 午夜黄昏用at, 黎明用它也不错。 也可用在时分前，表明时间莫等闲。 Let’s learn 这些单词是什么意思呢？它们的用法是什么？除了这些单词还有吗？ Let’s learn 表示事情发生频率的副词在英语中被称为“频率副词”。 主要有：never 从不、seldom 很少、 sometimes 有时、 often 经常、usually 通常地、always 总是。 Let’s learn 频率副词在表示频率程度上的区别 频率副词 含义 用法 always 总是，一直 它表示的频率最高，表示动作反复、不间断。 usually 通常地 表示习惯性动作或状态，很少有例外的情况。 often 经常，时常 表示动作或状态的反复，中间偶尔有间断，与seldom互为反义词。 sometimes 有时 表示动作时有发生，动作间隔较长，相当于not very often。 seldom 很少，不常 表示否定含义。 never 从不 表达否定含义，表示动作或情况从未发生。 Let’s learn 从不 很少 总是 通常 经常 有时 always > usually>often>somtimes>seldom>never 总是 通常 经常 有时 很少 从不 Let’s practice seldom often usually never always sometimes 频率副词放在行为动词的什么位置呢？频率副词放在be动词的什么位置呢？ Let’s learn 频率副词在句中的位置 频率副词通常和一般现在时连用，它们一般放在行为动词之前，动词be、助动词或情态动词之后。 例如： He always gets good marks in exams. 他考试总是得高分。 She is usually in a good mood. 她通常心情很好。 We do not often go to the cinema. 我们不经常去看电影。 She can sometimes win in a match. 她有时能在比赛中获胜。 Let’s learn 有时为了强调，会把usually、always、often、sometimes等频率副词放在句首；有时还会把often放在句末，这时可用very或quite 来修饰often。 Sometimes I get home very late. 有时我回家很晚。 I love sweets, but my mother doesn’t let me have them very often. 我爱吃甜食，可妈妈不让我常吃。 Let’s learn 常用how often 来对频率进行提问。 －How often do you watch TV? 你多次时间看一次电视？ －I seldom watch TV. 我很少看电视。 Let’s practice 从下列选项中选出最正确的一项 1. Daniel thinks candies are bad for his teeth, and he______ eats them. A. always B. sometimes C.seldom D. often 2. －What are her hobbies? －Sorry， I don´t know. We_____ talk about work when we meet. A. never B. always C.sometimes D. seldom 3. Millie is______ late for class. And she is always the first one to arrive at school. A. sometimes B. always C.never D. usually Let’s practice 从下列选项中选出最正确的一项 4.－Would you like some coffee? －No, thanks. I _____ drink it. I think is the best. A. often B. seldom C.usually D. always 5. －_______ do you go to the school library? －Twice a week. A. How long B. How often C.How soon D. How much 6. －Ella, do you like this green dress? －Sorry, I _____ wear green dresses. I do not like this colour. A. always B. often C.sometimes D. seldom Let’s practice 根据句意及首字母提示填空 1. Ricky goes running every morning and he is a_______ healthy. 2. I often go to school by bike, but s___________ my father drives me to school. 3. －Zhang Guimei, ＂the most beautiful teacher＂, has touched us deeply. －Yes. She is always patient with her students and s________ gets angry with them. 4. I o______ go to the art museum because I like painting. 5. The survey shows that 17% of the students n_______ practise speaking English in public because they feel araid. lways ometimes eldom ften ever School is the key to unlocking the world. Enjoy your school life! Homework: 1. Master the usages of prepositions of time and adverbs of frequency. 2. Do more exercise to consolidate. 3. Finish exercises on《课课练》. $$