Unit 4 Natural disasters 第3课时Grammar 课件2023-2024学年牛津深圳英语九年级下册

Unit 4 Natural disasters Period 3 Grammar 牛津深圳·广州版 九年级下 Learning objectives After learning this lesson, you can: 1. 学习并理解 it 作为形式主语的三种用法. 2. 感知it在不同语境中作形式主语的用法，并正确运用it. 3. 适当运用it作形式主语，写一则自己的故事. Lead in Mike’s story Lead in Lead in Lead in Lead in Lead in Do you know what it refers to ？ Presentation it 代指具体事物， 可以用来代替一个名词,一个代词或一个句子,在句中作主语。 it做主语，代指new job Presentation 1. It started to worry me. 2. Water was everywhere. It covered roads, parks and small houses. 3. Very soon, the water came into people’s room. It poured onto their desks and covered their computers Underline the sentences in the Great Flood and find out what it refers to. Presentation it 做主语 代指具体事物 it 做形式主语 ，没有具体意义 We can use it as the empty subject like this: It is one o’clock. It is summer now. It rained all day. It is only a five-minute walk from my home to the school. It is hot in this room. Using it as the empty subject Presentation 时间 季节 天气 距离 温度 time season weather Presentation It’s nine o’clock in the morning. My bedroom floor is a pool of water. We can use it as the empty subject like this: Using it as the empty subject Presentation it 做形式主语，代替动词不定式 To wake up early is difficult for Mike. Presentation it 做形式主语，常见句型： 1. It is adj for/ of sb to do sth It is interesting for us to play badminton. It is kind of you to help me. 2. It takes sb 多长时间 to do sth It takes him an hour to do his homework every day. 3. It is+n. to do sth It was a great pleasure to work with you. It took a long time to build the house. It is wrong to pay no attention to Kevin. It is not a good idea to sit around and worry about the flood. To build the house took a long time. To pay no attention to Kevin is wrong. To sit around and worry about the flood is not a good idea. Presentation We can also use it as the empty subject in the following sentence pattern: It seems/appears that … Presentation Use it as the empty subject of a sentence to replace a sentence. Using it as the empty subject A Answer the question