Unit5 第四课时（PPT）- 【中职专用】 高一英语精品课件(外研版2021基础模块1）

英 英 语 语 Unit 5 We Have Only One Earth! 第四课时 2 Grammar in Use Present continuous Find the rules ● Things are improving. ● The government is working hard to cut down pollution all over the country... ● Scientists are working on new products all the time! 表示现在正在进行的动作和发生的事情，或表示现阶段正发生的事，用现在进行时。 1. 现在进行时由 am/is/are + 动词 -ing 形式构成。如： She is talking with me about the matter. —What are you doing? —I’m reading a novel. Do you know Grammar in Use Present continuous 2. 现在进行时常与 now，at the moment，at present 等表示时间的词语连用。如： Look, it’s raining now. I’m doing nothing at the moment. 3. 有些表示状态和感觉的动词不能用进行时，如 hear，sound，smell，love，need，matter 等。 如： The flowers smell nice. I need your help. 4. 现在进行时还可用来表示将来的动作。如： A friend is coming to stay with me next week. I’m flying to Shanghai tomorrow. Do you know Complete the dialogue with the proper form of the words in brackets. Dad: Where is Tom? Mum: He (1)__________________ (be) in the kitchen. Dad: What (2)__________________ he__________________ (do) there? Mum: He (3)__________________ (make) a cake for Katie. Today is her birthday. She (4) __________________ (like) it. Dad: Oh, it’s so sweet. But where is Katie? Mum: She (5)__________________ (do) her homework in her room. Dad: OK. What (6)__________________ Jack__________________ (do) now? Mum: He (7) __________________ (watch) TV. What’s the matter? Dad: I (8)__________________ (need) to fix the projector. Maybe someone can help me. Grammar in Use Present continuous For more practice is doing is likes doing is making is need is watching is doing ● Some waste can be converted into new products... ● What can be reduced, reused or recycled in our daily life? Find the rules 英语中有主动语态和被动语态。在主动语态中，施动者（做出行为的人）作主语；在被动 语态中，动作的承受者作主语，施动者可以出现在由 by 引导的短语中。 1. 被动语态由助动词 be + 动词的过去分词构成，助动词 be 有时态、人称和数的变化。 不同时态的被动语态构成形式如下： Do you know Grammar in Use Passive voice 2. 不是所有动词都有被动语态，一些动词没有被动语态，如 arrive，happen，become， have，stay 等