Unit 7 Memory Period 3 Grammar 课件 2023-2024学年沪教牛津版（广州沈阳通用）八年级英语上册

牛津深圳 广州版 八年级上 Unit 7 Memory Grammar Learning objects 1. 掌握用if 条件句表示条件与结果之间存在必然联系的用法。 2. 掌握unless引导的条件状语从句的用法。 3.掌握unless引导的条件状语从句与if…not结构之间的转换。 4. 能够正确运用if或unless条件句完成对话。 If you walk a long the Bund, you will see many old buildings. Lead in Do you remember we have learnt if-clause when we are in grade 7? Let’s review it. The if-clause talks about a possible action. The main clause talks about the likely result. Carol is giving advice to Henry. What is she saying? Use the pictures and the words in brackets to help you. _ the wheels round, they _ easily. (make / turn) 1 If you make will turn Lead in 2 The seeds _ _ in the soil. (grow / plant) will grow if you plant them _ another wing, it _. (put on / fly) 3 If you put on will fly Lead in _ your coat, you _ so cold. (put on/not feel) 4 If you put on will not feel The meat _ _ in the fridge. (not go bad/put) 5 will not go bad if you put it Lead in 6 You _ _ your glasses. (see clearly/wear) will see clearly if you wear Lead in The verbs in the if-clause are in the simple present tense. The verbs in the main clause are in the simple future tense. Presentation A Conditional sentences (2) If you put salt into water, it disappears. The if-clause talks about a possible action.(条件句表示一个可能的动作) The main clause talks about the result that will certainly happen.(主句表示必然的结果或客观真理) We can also use conditional sentences to talk about results that will certainly happen. Presentation There are more facts about our daily life. Can you match the possible actions with the results correctly? Presentation If you take a fish out of water, it dies. If you switch off the lamp, the room becomes dark. If you put wood into water, it floats. If you water a plant, it grows. If you drop a glass, it breaks. When we use a conditional sentence to talk about something that will certainly happen, both verbs should be in (the simple present tense/the simple future tense). Conditional sentences (2) Work out the rule In pairs, make conversations about the s