Unit 4 Period Three（课件）-2018版步步高学案导学与随堂笔记英语（人教版必修2）全国版

Unit 4　Wildlife protection 写作专题 内容索引 Period Three　Grammar & Writing 语法专题 语法专题 Ⅰ.用所给动词的正确形式完成课文原句 1.We (kill) for the wool beneath our stomachs. 2.Our fur (use) to make sweaters for people like you. 3.I wonder what (do) to help you. 4.So good things (do) here to save local wildlife. 语法感知 现在进行时的被动语态 are being killed is being used is being done are being done Ⅱ.用现在进行时的被动语态改写下列句子 1.We are writing a report about the negative effects of cellphones in school. __________________________________________________________ 2.What is this company producing? ___________________________________ 3.Some scientists are studying human cloning. ___________________________________________ A report about the negative effects of cellphones in school is being written. What is being produced in this company? Human cloning is being studied by some scientists. 4.They are building a computer center for the students. __________________________________________ 5.The students in Class One are planting the trees and watering the flowers. _________________________________________________________________________________ 6.They are setting free more and more Milu deer at present. _______________________________________________________ A computer center for the students is being built. The trees are being planted and the flowers are being watered by the students in Class One. More and more Milu deer are being set free at present by them. 1.现在进行时的被动语态的构成形式 am/is/are＋being＋过去分词 2.现在进行时的被动语态表示的意义 (1)表示某事/某人此时此刻正在被……。 Look！The water is being turned into steam. 瞧！水正在变成蒸汽。 The bridge is being repaired. 这座桥正在被修复中。 语法精析 (2)表示某事/某人现阶段正在被……。 Many interesting experiments are being carried out these days. 这些天许多有趣的实验正在被进行着。(说话时并不一定正在进行) (3)表示一种经常性的被动行为，常与always，constantly，frequently等词连用，表示赞赏(扬)、羡慕、讨厌等感情色彩。 I feel very surprised that the window of our classroom is frequently being broken. 我感到非常吃惊的是我们教室的那扇窗户经常被打破