Unit 2 Section Ⅲ Discovering Useful Structures（Word教参）-【优化指导】2023-2024学年新教材高中英语必修第二册（人教版2019）

Section Ⅲ　Discovering Useful Structures 现在进行时的被动语态 [对应学生用书P45] [观察] 1．Much is being done to protect wildlife，but if we really want to save the planet，we must change our way of life. 2．African elephants are being hunted. 3．What is being done to help them? 4．What measures are being taken to help them? 5．Billions of trees are being cut down every year to make paper for humans. 6．In this way a lot of animal homes are being destroyed! [探究] 1．以上句子中的黑体部分均表示正在进行的被动动作，为现在进行时的被动语态； 2．结构为“be动词(am/is/are)＋being＋动词的过去分词”。 不及物动词有没有现在进行时的被动语态？ 没有。 一、含义 [感知] 1．The plan is being discussed by us. 这个方案正在被我们讨论。 2．The report is being written by the student. 报告正在被这个学生写。 3．The baby is being taken care of by his father. 这个宝宝正在被他的父亲照顾。 [探究] 1．以上句子中黑体部分均表示正在进行的被动动作，都用了现在进行时的被动语态。 2．句1、2中的谓语动词是及物动词，主语是动作的承受者。 3．句3的谓语动词是动词短语，介词不能省略。 4．以上句子中by后均为动作的执行者。 [归纳] 现在进行时的被动语态表示现在或现阶段正在进行或发生的被动动作，强调主语是动作的承受者。 [即练] 单句填空 ①Many things are being done(do) to protect the animals. ②I'm working at home today because my office is being painted(paint). ③The Tibetan antelopes are being observed(observe) these days. ④The sports meeting is being held(hold) in our school at present. 二、构成 [感知] 1．The babies are being looked after by this nurse. 这些婴儿正由这个护士照看着。 2．The babies are not being looked after by this nurse. 这些婴儿不是由这个护士照看的。 3．Are the babies being taken care of by this nurse? 这些婴儿正由这个护士照看吗？ 4．Who are being taken care of by this nurse? 这个护士在照看谁？ [探究] 句 形式 结构 1 肯定句 be(am/is/are)＋being done 2 否定句 be(am/is/are)＋not＋being done 3 一般疑问句 be(am/is/are)＋主语＋being done 4 特殊疑问句 特殊疑问词＋be(am/is/are)＋being done [归纳] 1．现在进行时的被动语态有四种句式，分别是肯定句、否定句、一般疑问句和特殊疑问句； 2．现在进行时的被动语态的基本构成形式为“be(＋not)＋being done”，一般疑问句需将be动词提前；特殊疑问句则用相应的特殊疑问词构成。 [即练] 句型转换 A new law is being made to prevent endangered animals from extinction. →A new law is not being made to prevent endangered animals from extinction.(否定句) →Is a new law being made to prevent endangered animals from extinction？(一般疑问句) →What is being made to prevent endangered anim