Unit8 Grammar语法课件- 2025-2026学年沪教版英语七年级下册

该初中英语课件聚焦时间状语从句（7个引导词及用法）和used to结构，通过“用when合并8个句子为4个”的导入任务，激活学生对简单句的认知，搭建从单句到复合句的学习支架，衔接后续结构分析及时态规则学习。 其亮点在于以“结构-时态-拓展”逻辑递进，通过对比表格（如when接短/长动作、while接长动作）、时态规则总结（主将从现、主过从现）及中考真题练习，提升学生语言能力与思维品质。课堂总结提炼核心考点，助力学生构建语法体系，教师可直接用于语法教学，提高教学效率。

Unit 8 Follow your interests Period 3 Grammar 1 1. He was born in a village. 2. He was like a ball. 3. People saw Nezha. 4. They were afraid of him. 5. He feels bored. 6. He often goes up to the wall and enjoys the view. 7. His mother is free. 8. She will play with him. Try to use “when” to make these eight sentences into four. He was like a ball when he was born. When his mother is free, she will play with Nezha. They were afraid of him when they saw Nezha. When he feels bored, he often goes up to the wall and enjoys the view. Adverbial clauses of time (when) We can use the conjunction when to form an adverbial clause of time. It links two clauses into one sentence. when 可以用于引导时间状语从句，表示某一时间发生的动作。可用于链接两个句子。P121 Lead-in He was like a ball when he was born. They were afraid of him when they saw Nezha. When he feels bored, he often goes up to the wall and enjoys the view. When his mother is free, she will play with Nezha. Adverbial clauses of time (when)—structure 结构 main clause 主句 adverbial clauses of time 时间状语从句 adverbial clauses of time 时间状语从句 main clause 主句 Difference？ 时间状语从句位于主句之前时，常用逗号将从句和主句隔开；位于主句之后时，则不需用逗号。 While-learning Adverbial clauses of time (when)—tense 时态 He was like a ball when he was born. They were afraid of him when they saw Nezha. When he feels bored, he often goes up to the wall and enjoys the view. When his mother is free, she will play with Nezha. 主过从过 主现从现 主将从现 时间引导词总表（表格1） 引导词 含义 用法要点 when 当……时候 接时间点/短动作 while 当……时候 接长动作/同时进行 as 随着；一边……一边 强调伴随 1. when引导的时间状语从句 表示主句的动作和从句的动作同时发生，或从句的动作发生在主句动作之前。从句的谓语动词可以是延续性动词,也可以是非延续性动词。 I knew him when he was a little boy. 他还是个小男孩的时候我就认识他了。 Call me when you’ve finished. 你完成后就打电话给我。 Adverbial clauses of time (时间状语从句) 2. while引导的时间状语从句 表示“在……期间”，强调主句的动作在从句所表示的时间段内持续发生，从句中的动词通常是延续性动词。 While we were having dinner, the power went out. 我们正在吃饭的时候，突然停电了。 We saw a beautiful butterfly while we were walking in the park. 我们在公园散步的时候看到了一只美丽的蝴蝶。 拓展 Adverbial clauses of time (时间状语从句) 3. as引导的时间状语从句 as表示“随着……”；“一边……一边……”,强调主句动作或状态的变化伴随着从句中的动作而发生。 As technology develops, our lives become more convenient. 随着科技的发展，我们的生活变得更加便利。 As children grow up, they become more independent. 随着孩子们长大，他们变得更加独立。 Adverbial clauses of time (时间状语从句) before 在……之前 动作先后 after 在……之后 动作先后 as soon as 一……就…… 动作紧接着 until 直到……为止 动作持续 时间引导词总表（表格2） 4. before引导的时间状语从句 before(在……之前),即主句动作发生在从句动作之前 Check your homework carefully before you hand it in. 在你交家庭作业之前仔细检查。 It was some time before I realized the truth. 过了很长一段时间我才悟出真相。 Adverbial clauses of time (时间状语从句) 5. after引导的时间状语从句 after(在……之后)，即主句动作发生在从句动作之后 We went for a walk after we had dinner. 我们吃完晚饭后去散步了。 After winning the prize she became famous overnight. 她获奖后一夜之间成名了。 Adverbial clauses of time (时间状语从句) 6. as soon as引导的时间状语从句 表示“一……就……”，强调主句动作紧接着从句动作发生，表示一种紧密的时间先后关系。 As soon as the teacher entered the classroom, the students became quiet. 老师一进教室，学生们就安静下来了。 We went outside to play as soon as the rain stopped. 雨一停，我们就出去玩了。 Adverbial clauses of time (时间状语从句) 拓展 7. until/till引导的时间状语从句 表示“直到……为止”，引导的从句动作持续到主句动作发生的时间点。 We couldn't leave the theater until/till the movie ended. 我们一直待在电影院，直到电影结束。 He waited until/till the bus arrived. 他一直等到公共汽车到来。 Adverbial clauses of time (时间状语从句) 拓展 Until和till的区别 正式程度： until：通常被认为更正式，更常用于书面语和正式场合。 till：相对更口语化，更常用于日常对话和非正式场合。 位置： until：可以放在句首或句中。 till：通常放在句中，较少放在句首。 Adverbial clauses of time (时间状语从句) 拓展 时间状语从句—总结 时间状语从句用来说明动作发生的时间。 由引导词连接主句和从句两个句子。 从句不能单独成句，必须依附主句存在。 位置：可放在主句前（加逗号），也可放主句后。 核心考点：引导词区别 + 时态搭配。 He used to make fun of the people in the village. Now he helps fight against bad people. The villagers used to hate him. Now the villagers thank him for protecting them. People change! used to We use “used to” to talk about something we often did in the past. 过去常常做某事，有暗指现在不再做的含义 We use used to talk about something we often did in the past. We don’t do the things now. Liu Wei used to go to school on foot. Now he goes to school by bike. I used to take apart radios to see how they worked. I used to be in the tech industry for years. used to的后面要用动词原形 (the base form) used to可用于表示过去经常做的事情，暗指现在已经不做。 Rule used to / did not use to used to / did not use to Sentence transformation 肯定句 He used to stay at home alone. 否定句 He didn’t (did not) use to stay at home alone. 一般疑问句 Did he use to stay at home alone? 肯定回答/否定回答 Yes, he did. / No, he didn’t. Used to + do Didn’t use to + do Did ... use to + do Liu Wei didn’t use to enjoy swimming. Now he goes swimming every week. Liu Wei used to be shy. Now he enjoys doing sport with his classmates. used to / did not use to Look at the pictures of Liu Wei at primary school and the pictures of Liu Wei now. Describe what he used to do and what he does now. 课堂总结（一） 时间状语从句：用来说明动作发生的时间。 7个引导词：when, while, as, before, after, as soon as, until。 时态核心：主将从现、主过从过。 when 接短/长动作；while 只接长动作。 as soon as 表“一……就……”，高频考点。 Post-learning 课堂总结（二） used to：表过去习惯/状态，今昔对比。 肯定：used to + 动原；否定/疑问：use to。 易错点：didn’t / Did 后面必须用 use。 答题技巧：先看时间关系，再选引导词； 看是否今昔对比，再用 used to。 before As after Did use to didn’t use to A A D C A B A B C D A C A C D 25 Thank you! 26 $