Unit2 Lessons in life Period3 Using language 教案-2022-2023学年高中英语外研版（2019）选择性必修第四册

Topic Passive voice Teacher Teaching Aims: 1. Let the students know more about the usage of passive voice. 2. Lead the students to learn the story of"never too old to learn",experience the significance of lifelong learning, and cultivate their optimistic values. Teaching important Points: 1.Help the students to grasp the key points to use passive voice. 2.Guide the students to learn and use common proverbs in daily life. Teaching difficult points: 1. Help the students to grasp some key sentence patterns. 2. Guide the students to find and summarize the rules of passive voice. Teaching methods: Introduction method Teaching type: Grammar 课 时 two Teaching procedure: Teaching contents: Step1: Leading-in Step2: Step3: Summary 英语有两种语态:主动语态和被动语态。主动语态表示主语是谓语动词所表示的动作的执行者。被动语态表示主语是谓语动词所表示的动作的承受者。其构成为:助动词be+过去分词。在被动语态中，by后常跟动作的执行者。且通常只有需要动作对象的及物动词才有被动语态,不及物动词没有被动语态。 Task1: 被动语态的时态、形式(以动词do为例): (1)现在时 ①一般式（am/is/are done） Rice is grown in the south of the US. 美国南部种植水稻。 ②时进行式（am/is/are being done） English lessons are being broadcast on the radio. 英语课正在广播里被播放。 ③完成式（have/has been done） The case has recently been tried. 这桩案子最近已经被审过了。 (2)过去时 ①一般式（was/were done） They were given a warm sendoff. 他们受到了热烈的欢送。 ②进行式（was/were being done） We had to take a detour.The road was being repaired. 我们得绕行。这条路正在被维修。 ③完成式（had been done） When we got there the work had been finished. 我们到那里时，工作已经被完成了。 (3)过去将来时（should/would be done） The teacher told us that a new experiment would be performed the next day. 老师告诉我们第二天有一个新实验要做。 (4)一般将来时（will/shall be done） A new bridge will be built over the river. 河上将建一座新桥。 Task2.被动语态的特殊情况 (1)情态动词的被动语态 含有情态动词的被动语态的构成:情态动词+be+及物动词的过去分词。 All the letters should be answered immediately. 所有信件均应立刻回复。 This can be done by hand. 这可以手工做。 It needn't be mentioned in your talk. 这一点你在谈话中不必提及。 Other problems also have to be faced.还须面对其他问题。 (2)不定式的被动语态 ①一般式(to be done):表示不定式所表示的动作在谓语动词所表示的动作之后发生或与其(几乎)同时发生。 ②完成式(to have been done):表示不定式所表示的动作发生在谓语动词所表示的动作之前。