Unit 2 Wildlife Protection 第3课时 Grammar语法 现在进行时的被动语态（备课件）-【上好课】2022-2023学年高一英语同步备课系列(人教版2019必修第二册）

Unit 2 Wildlife Protection Period 3 Discovering useful structures 1 When the buying stops, the killing can too. —WildAid Teaching objectives 1.Learn to know the structure of present continuous passive voice. 2.Learn to use present continuous passive voice to describe the ongoing events. 3.Learn to use present continuous passive voice to describe the endangered animals’ conditions and measures taken to help them. 3 deer kangaroo reduce due due to insect net neighbourhood n. 鹿 n. 袋鼠 vt. 减少 adj. 由于；因为 由于；因为 n. 昆虫 n. = Internet; 网 adj. 净得的；纯的 n. 临近的地方；街区 Discovering Useful Structures African elephants are being hunted. What is being done to help? What measures are being taken to help them 5 Present Progressive Passive Voice. 现在进行时的被动语态 What is it? 表示“某人/事此时此刻正在被…”，主语是动作的承受者, 表示说话时或现阶段某个被动的动作正在进行。 被动语态的构成 1. The book was written by Lu Xun. 2. The classrooms are cleaned by students every day. 3. This maths problem can be worked out by little Tom. 被动语态的构成：主语+ be(am/is/was/are/were) +done 一、观察例句，归纳用法。 1.It is reported that many a new house is being built at present in the disaster area. 2.The plan is not being discussed at the meeting now. 3.Is the house you bought last month being decorated now? 4.What is being done to the machine? 1.如句(1):现在进行时的被动语态肯定形式为:主语+ ________________________。 2．如句(2):现在进行时的被动语态否定形式为:主语+ _____________________。 3．如句(3):现在进行时的被动语态的一般疑问句式为：______________________________。 4．如句(4):现在进行时的被动语态的特殊疑问句式为：________________________________________。 is/am/are being done is/am/are not being done is/am/are＋主语＋being done 疑问词＋is/am/are+主语＋being done 现在进行时的被动语态构成 形式 结构 肯定式 主语＋am/is/are＋being done. 否定式 主语＋am/is/are not＋being done. 一般疑问式 am/is/are＋主语＋being done？ 特殊疑问式 疑问词＋am/is/are＋主语+being done？ 3.主动语态变被动语态的原则 “三变” 例：They are building nine parks. 原句主语 by的宾语 宾语 主语 谓语由主动 被动 “三不变” 原句意思不变 原句时态不变 原句主谓宾以外成分不变 N