Unit 5 Power of Ideas Section A Grammar Focus 课件 2026-2027学年人教版英语九年级上册

Unit 5 Power of Ideas Grammar Focus Let’s learn I wash my clothes everyday. My clothes are washed by me everyday. be done The passive voice The active voice A mini-camera is connected to the front of the glasses. The oil and salt are also added by the machine itself. Toys, chairs, tables, and even houses can all be made by the 3D printer. A radio message was sent across the Atlantic Ocean for the first time in 1901. Read the sentences. Circle the verbs in the passive voice. 4a The action is done to the subject. 主语是动作的承受者(the receiver) 被动语态句子有两类:1.带施事者: 含by的短语; 2. 不带施事者: 不含by短语。 The definition of passive voice 被动语态是动词的一种形式, 主语与动作之间是被动关系, 主语是 动作的承受者(动作作用在主语身上)。 The structure of the passive voice be + done (动词的过去分词) The use of the passive voice 肯定句 一般现在时:主语 + am/is/are + done (+ by + 施事者). 一般过去时:主语 + was/were + done (+ by + 施事者). 否定句 一般现在时:主语 + am/is/are + not + done (+ by + 施事者). 一般过去时:主语 + wasn’t/weren’t + done (+ by + 施事者). 一般疑问句 一般现在时: —Am/Is/Are +主语 + done (+ by + 施事者)? —Yes, 主语 + am/is/are. —No, 主语 + am/is/are+not. 一般过去时: —Was/Were + 主语 + done (+ by + 施事者)? —Yes, 主语 + was/were. —No, 主语 + wasn’t/weren’t. 特殊疑问句 一般现在时:疑问词 + am/is/are + 主语 + done (+ by + 施事者)? 一般过去时:疑问词 + was/were + 主语 + done (+ by + 施事者)? 肯定句 主语 + 情态动词+ be + done (+ by + 施事者). 否定句 主语 + 情态动词 + be + not + done (+ by + 施事者). 一般疑问句 情态动词 +主语 + be + done (+ by + 施事者)? 特殊疑问句 疑问词 + 情态动词 +主语 + be + done (+ by + 施事者)? 含情态动词的被动语态 When do we use the passive voice? (1) 不知道或不必提及动作的执行者 eg: The first electric railway was opened in 1890. (2) 强调动作的执行者 eg: The beautiful hat was given by my grandmother. (3) 强调动作的承受者 eg: The TV was invented after the car. (4) 动作的执行者是无生命的事物 eg: The bridge was washed away by flood. (5) 常用于陈述客观事实,一般用在科技文章或新闻报道中 eg: More research needs to be done, if this problem is to be solved. (6) 部分动词短语/句型在习惯上只用于被动语态 eg: The road is covered with snow. 不及物动词及词组没有被动结构, 如: happen、take place、come true、run out、fall asleep等。 eg: Our dream will surely come true. write、wash、sell、read、clean等可作不及物动词, 用主动语态,和well、easily等副词连用, 含有被动意义。 eg: This kind of skirt sold well here. look、sound、smell、taste、feel、get、turn、become、seem等系动词后接形容词作表语时, 常用主动形式表示被动含义。 eg: This cup of orange juice tastes strange. 特殊情况 动词need, want以及短语be worth 等后接动词-ing时, 用主动形式表示 被动含义。 eg: My flowers need watering. 主动句中感官动词see / hear / watch / feel等和使役动词make / let / have 等后跟省略to的动词不定式, 变为被动语态时应加上不定式标志to。 eg: I saw him leave the room. He was seen to leave the room. 特殊情况 • It is said that (据说) • It is believed that (人们相信) • It is known that (众所周知) • It is reported that (据报道) • It is expected that (预计) (1) The telephone (invent) by Alexander Bell in 1876. (2) People all over the world (connect) to each other through the internet. (3) The word “robot” (introduce) for the first time in a play in 1920. (4) It wasn’t supposed to make such a loud noise when the button (press) to start the machine. (5) It is believed that the world’s oldest wheel (find) in Eastern Europe. was invented are connected was introduced was pressed was found Complete the sentences with the correct forms of the verbs in brackets. 4b be expected to happen Which railway is the picture showing? The Qinghai-Xizang Railway • How much do you know about this railway? Complete the passage with the correct forms of the verbs in brackets. The Qinghai-Xizang Railway was completed in 2006. It (connect) Xining to Lhasa, a huge distance of 1,956 kilometres, and it is the highest railway in the world, reaching 5,072 metres above sea level at Tanggula Pass. The building of the railway was a great challenge. Creative ideas (need) to solve different problems. In summer, the top layer of the frozen ground would melt and become too soft to build on, so pipes (use) to keep the ground hard. However, in some places, it was impossible to build the railway over the frozen ground, so tunnels had to (create) instead. In some other places, bridges (build) to keep the railway up above the ground. These bridges are animal-friendly and (allow) animals to pass under the tracks. connects were needed were used be created were built allow 4c Complete the passage with the correct forms of the verbs in brackets. As an important and successful project, the railway has (increase) tourism and economic development in the area. The lessons learnt and experience gained from building this railway will help (improve) transport in other similar places in the world. increased (to) improve 4c Read the text again and answer the questions. 1. What challenges did builders face when building the railway? • build on frozen ground • the top layer of the frozen ground would melt and become too soft to build on 2. Why is the Qinghai-Xizang Railway an important national project? It shows the creativity of Chinese engineering and technology. It reflects the Chinese cultural spirit of benefiting the people. 3. What does the Qinghai-Xizang Railway teach us about Chinese people? Chinese people are creative, determined, and never give up in the face of challenges. They can solve difficult problems and turn impossible dreams into reality. 4c 谢谢 $