Unit 7 The secret of memory (Grammar）课件 2025-2026学年沪教版英语八年级上册

该初中英语课件聚焦if条件句（表必然结果）和unless用法，通过颜色混合猜结果、日常现象匹配等情境活动导入，从具体实例到语法规则，搭建学习支架，帮助学生逐步理解并运用知识点。 其亮点在于情境化设计与任务型练习结合，通过unless替换改写、生活建议写作等活动，提升语言能力（真实情境表达）和思维品质（分析比较if与unless），总结部分清晰归纳规则，助力学生巩固运用，教师可直接使用丰富教学资源提升效率。

of Memory The Secret 英语沪教版八年级上册 Unit 7 Grammar Learning objectives 理解并归纳条件句(if/unless)的意义及用法； 重点 01 在真实情境中正确使用条件句表达必然结果或建议； 重点 02 增强对记忆与生活习惯之间关系的认识，提升健康意识。 03 通过本课时的学习，学生能够： Look and answer What happens if you mix yellow and blue? green Look and answer What happens if you mix red and blue? purple Look and answer What happens if you mix red and yellow? orange Read and guess Read these sentences below and guess what colour you get. ＋ ＝ If you mix blue and yellow, you get green. ＋ ＝ If you mix red and white, you get pink. ＋ ＝ If you mix blue and red, you get purple. ＋ ＝ If you mix green and red, you get brown. ＋ ＝ If you mix red and yellow, you get orange. ———— ——— Read and fill Read these sentences and pay attention to the words in bold. Then fill in the blank. ＋ ＝ If you mix blue and yellow, you get green. ＋ ＝ If you mix red and white, you get pink. ＋ ＝ If you mix blue and red, you get purple. ＋ ＝ If you mix green and red, you get brown. ＋ ＝ If you mix red and yellow, you get orange. The if-clause talks about a possible action. The main-clause talks about the result that will certainly happen. Read and fill Read these sentences and pay attention to the words in bold. Then fill in the blank. ＋ ＝ If you mix blue and yellow, you get green. ＋ ＝ If you mix red and white, you get pink. ＋ ＝ If you mix blue and red, you get purple. ＋ ＝ If you mix green and red, you get brown. ＋ ＝ If you mix red and yellow, you get orange. When we use a conditional sentence to talk about something that will certainly happen, both verbs should be in the ______________. simple present Read and match (1) If you take a fish out of water, a it grows. (2) If you switch off the lamp, b it dies. (3) If you put wood into water, c the room becomes dark. (4) If you water a plant, d it breaks. (5) If you drop a glass, e it floats. Read these if-clauses and match them with the results. Read and complete If you 1. _____________ (not, get) enough sleep, you 2. _________________ (not, remember) things well. don’t get will not remember Your brain 3. ________ (find) it hard to remember things if you 4. ___________ (not take) time to relax. will find don’t take You will not remember things well _______ you get enough sleep. unless ______ you take time to relax, your brain will find it hard to remember things. Unless We can use to _____ replace if … not. unless Read, fill and choose 1. You will not remember things well unless you get enough sleep. 2. Unless you take time to relax, your brain will find it hard to remember things. 1. The unless-clause can come first or _____ the main clause. 2. We use the simple (future, present) tense in the unless-clause. √ after (1) If it doesn’t rain, I’ll go for a picnic with my friends on Saturday. (2) I’m going to make a birthday card for my mother if I don’t have any better ideas. Read and rewrite Unless it rains, I’ll go for a picnic with my friends on Saturday. I’m going to make a birthday card for my mother unless I have some better ideas. Su Wen is thinking about his weekend plans. Rewrite the sentences using unless. Read and rewrite (3) I’ll finish reading Romance of the Three Kingdoms if I’m not too tired on Saturday evening. (4) I’ll help Su Mei practise English if my mother’s birthday party doesn’t end too late. I’ll finish reading Romance of the Three Kingdoms unless I’m too tired on Saturday evening. I’ll help Su Mei practise English unless my mother’s birthday party ends too late. Su Wen is thinking about his weekend plans. Rewrite the sentences using unless. Interview your classmates about possible situations in life. You may add more questions to the list. Ask and answer What will happen if you don’t get enough sleep? What will you do if you can’t remember your password? What happens if you put some ice into a cup of hot water? What do dogs do if a stranger comes close? Interview your classmates about possible situations in life. You may add more questions to the list. Ask and answer What will happen if you don’t get enough sleep? If I don’t get enough sleep, I feel very tired and can’t  concentrate in class. What will you do if you can’t remember your password? If I can’t remember my password, I will click ‘forget password’ to reset it. ... If you mix blue and yellow, you get green. If you put salt into water, it disappears. Unless = If ... not 1. The unless-clause can come first or after the main clause. 2. We use the simple present tense in the unless-clause. Summary Rule: The if-clause talks about a possible action. The main-clause talks about the result that will certainly happen. When we use a conditional sentence to talk about something that will certainly happen, both verbs should be in the simple present. Homework 1. Write 3 sentences with “if ” and 3 with “unless” to give advice on study or life habits. 2. Write a short passage titled “My Advice for Better Memory”, using at least 3 “if/unless” sentences. Bye Bye $