Unit7 Grammar语法课件-2024-2025学年沪教版（2024）七年级英语下册

Grammar Unit 7 Role models of our time What place is shown in the video? Qian Xuesen Library & Museum. P105 Two students are visiting the Qian Xuesen Library & Museum. Read the dialogue and pay attention to the expressions in bold. When we want to express strong feelings or emphasize certain things, we use exclamations. These sentences usually have exclamation marks at the end. A Exclamations 感叹句 Ⅰ.基本用法 (1) It's so beautiful! (2) I love his music! (3) What a beautiful city! (4) How beautifully she sings! 真漂亮！ 我喜欢他的音乐！ 这座城市真漂亮！ 她唱得真好听！ 感叹句是表达一种较为强烈的感情(如喜悦、赞叹、惊异、愤怒、厌恶等)的句子。读时一般用降调。 Can you divide them into two groups? 这类感叹句在句式上与陈述句没有任何区别，只是将句号变成了感叹号，语气变得更强烈而已。 Ⅱ.两大句型 1. What 型感叹句： (1) What an interesting poem (it is)! 中心词为单数可数名词 加冠词a或者an (2) What bad weather (it is)! 中心词为不可数名词 无冠词 (3) What beautiful flowers (they are)! 中心词为复数名词 无冠词 What+(a/an)+形容词+名词 (+主语+谓语)！ what 型感叹句以名词为中心词。 2. How型感叹句： (1) How lucky we are! (2) How quickly the time passed! (3) How bright the stars are! How+形容词/副词 (+主语+谓语)！ how型感叹句以形容词或副词为中心词。 1. what和how引导的感叹句通常可以互相转换。 ① What a lovely day it is! → How lovely the day is! 多好的天气啊！ ② What good suggestions! → How good the suggestions are! 多好的提议啊！ 2. what和how引导的感叹句在口语中常用简略式，即省略主语和谓语。 What an interesting poem! What beautiful flowers! What bad weather! How lucky! How fast! How bright! We can use a word or phrase as an exclamation, such as Oh no! or Lovely! We can also use a word or phrase with what or how to show strong feelings. 我们可以用一个单词或者短语作为一个感叹句，例如“哦，不！”或“真可爱！” 我们也可以用一个带有what和how的单词或短语来表达强烈的情感。 ______ a beautiful bird it is! _____ __________ the bird is! It is a wonderful cartoon! _____ wonderful the cartoon is! How What How beautiful They are lovely pandas. ______ lovely pandas (they are)! It is such a big pumpkin! Wow, _____ ____ the pumpkin is! What how big He is a strong boy. _____ ____ strong boy (he is)! What a The cat is lovely. _____ ______ the cat is! How lovely They are skating fast. _____ ____ they are skating! How fast The sailing game is exciting. _____ _______ the sailing game is! _____ __ ________ sailing game! How exciting What an exciting P105 Let's sum up the rules! We often begin an exclamation with the word what or how. What + (a / an) + (adjective) + noun + (subject + verb) + ! How + adjective / adverb + (subject + verb) + ! We can also use a word or phrase as an exclamation, such as Wow! 1 Rewrite the sentences below using exclamations with what or how. 1. He is a great doctor. ___________________________________ 2. Anna has a challenging job. ___________________________________ 3. My teachers were really wonderful. ___________________________________ 4. A social worker's job is very important. ___________________________________ What a great doctor he is! What a challenging job Anna has! How wonderful my teachers were! How important a social worker's job is! P105 B Imperatives 祈使句 Read what the librarian says about the library rules and pay attention to the imperatives. There are some library rules you need to follow. Be quiet. Don't litter in the library. Don't eat in the library. Please treat books nicely. Don't bring pets to the library. We use imperatives to give orders or advice. There are _______ and ________ imperatives. positive negative We can use please with imperatives. It is more polite. ★祈使句的动词都为动词原形。 We use imperatives to give orders or advice. 我们用祈使句来发出命令或给出建议。 ★祈使句因对象（即主语）是第二人称，所以通常都省略。 (1) Open the door, Daisy. (2) Don't open the door, Daisy. (3) Let's make a million smiles! 打开这个门，Daisy。 不要打开这个门，Daisy。 让我们多微笑吧！ 发出命令 发出命令 给出建议 Ⅰ.基本用法 Ⅱ.句式变换 1.肯定句 ① Have a seat here. 这边坐。 ② Go this way, please. 请这边走。 Do型 (即：动词原形+宾语+其他成分) = This way, please. (2) Be型 (即：Be+表语+其他成分) Be a good boy! 要做一个好孩子! Let me help you. (3) Let型 (即：Let+宾语+动词原形+其他成分) 让我来帮你。 有的祈使句在意思明确的情况下，动词可以省略。 2.否定句 (1) Do型和Be型的否定式都在句首加don't构成。 (3) 有些祈使句可用no开头，用来表示禁止。 ① No smoking! ② No fishing! Don't let him go. / Let him not go. (2) Let型的否定式有两种： Don't＋let+宾语+动词原形+其他成分和 Let+宾语+not+动词原形+其他成分。 ① Don't forget me! ② Don't be late for school! 不要忘记我！ 上学不要迟到! 禁止吸烟！ 禁止钓鱼！ 别让他走。 Please hurry up. 请快点。 1. 为了显得更为客气和礼貌，我们常在祈使句中加上please。当please用在句末时，需用逗号与其余部分隔开。 2. 祈使句的动作通常是表示将来发生的动作，所以回答祈使句时，一般用will或won't。在回答时，要注意分析上下文语境中所提供的条件。 - Don't go out, please. It's raining hard. - OK, I won't. 请不要出去。正下着大雨呢。 好，我不会出去的。 = Hurry up, please. Let's sum up the rules! We need to add be before adjectives when we use them as imperatives. We use the base form of a verb in a positive imperative. In a negative imperative, we use don't before the base form of the verb. 1. ___________________________________ 2. ___________________________________ 3. ___________________________________ 4. ___________________________________ 5. ___________________________________ Please don't eat or drink in the theatre. Please put rubbish in the bin. Don't take photos in the theatre. Don't bring pets to the theatre. Put your phone in silent mode. 2 Here are some signs in the theatre. Use imperatives and the expressions below to describe what the signs mean. P106 Imperatives Exclamations Can you use exclamations and imperatives correctly? Imagine you are interviewing your role model. Use exclamations to express your feelings. You may use imperatives if necessary. Imagine you are interviewing your role model. Use exclamations to express your feelings. You may use imperatives if necessary. S1: Good day. Thank you for letting me interview you today. What's your job? S2: I'm a social worker. I help old people in the community. S1: What a great job! How do you help them? ... Work in pairs. Finish your interview dialogue script(稿子) and present it to the class in the next lesson. $$