2.3 Discovering useful structures语法现在进行时的被动语态 （课件）-高一英语同步精品课件+课后习题（人教版2019必修第二册)

Unit 2 Wildlife Protection Period 3 Discovering useful structures 1 1. Help students learn the form of Present Progressive Passive Voice. 2.Guide students to know how to use Present Progressive Passive Voice. 3.Design specific situations for students to make small conversitions. 2 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(