高中英语 Unit 2 Wildlife protection Section Ⅱ Discovering Useful Structures学案（含解析）新人教版必修第二册-新人教版高一必修第二册英语学案VIP专享

Unit 2 Wildlife protection Section Ⅱ Discovering Useful Structures——现在进行时的被动语态——一、现在进行时的被动语态的基本结构肯定结构be (am/is/are) being done否定结构be (am/is/are)＋not＋being done一般疑问结构be (am/is/are)＋主语＋being done特殊疑问结构特殊疑问词＋be (am/is/are)＋主语＋being doneA new library is being built now.一座新图书馆正在被修建。Some disabled children are not being looked after well enough.目前一些残疾儿童没有受到足够好的照顾。Is the bridge being repaired now?现在那座桥在修吗？What is being done on the new medicine?目前正在针对这种新药物做什么？How many bridges are being built in the town?在这个镇里在建的桥有多少？二、现在进行时的被动语态的基本用法1．表示正在进行或发生的被动动作，常与 now，look 等词连用。She is being examined by the doctor now.现在她正在被医生检查。2．表示现阶段或目前这段时间正在进行的被动动作，但这一被动动作在此时不一定正在发生。The life of the panda is being studied at present.现在正在研究大熊猫的生活习性。3．表示按计划、安排主语将要承受某个动作。Some rock music is being played by them next.下面将由他们演奏一些摇滚音乐。4．表示一种经常性或习惯性的被动行为，常与always，forever，continually，constantly 等词连用，往往带有赞扬、责备、厌烦及埋怨等感情色彩。Tom is always being praised by the teacher.汤姆总是受到老师的表扬。三、使用现在进行时的被动语态应注意的问题1．在现在进行时的被动语态中，be (am/is/are)为第一助动词，being 为第二助动词，缺一不可，且位置不可互换。My computer is being repaired now.我的电脑现在正在被修理。(强调正在被进行)2．像 take care of，look after，talk about，think of 等动词与介词构成的短语动词用于现在进行时的被动语态时，其中的介词不可省略。Something is being talked about among those people.那些人正谈论着某件事情。3．“be (am/is/are)＋under/in＋n.”有时可相当于现在进行时的被动语态。The school is still under construction now.＝The school is being built now.学校现在正在建设中。The new la...