初中英语语法-被动语态.ppt

中考语法精讲被动语态,被动语态的基本构成： be+动词的过去分词 （be+done),1.一般现在时am/is/are +done,We clean the classroom every day. The classroom is cleaned by us every day.,He put on a coat. A coat was put on by him.,2.一般过去时was/were+done,He made the kite. The kite was made by him.,3.一般将来时 shall/will /be going to+ be done,They will plant trees tomorrow. Trees will be planted by them tomorrow He is going to write a letter to his mother. A letter is going to be written to his mother by him.,被动语态的用法,1. 不知道动作的执行者是谁。,这块手表是中国制造的。 This watch is made in China.,2. 没有必要指出动作的执行者,每年都应该种更多的树。 Many trees should be planted every year.,3. 需要强调或突出动作的承受者。,世界上越来越多的人说汉语。 Chinese is spoken by more and more people in the world.,4. 句子的主语是动作的承受者。,许多房屋被冲走了。 Many houses were washed away by the flood.,主动语态变被动语态的方法,（主语） （宾语） 主动语态：动作的执行者+谓语动词的主动形式+动作的承受者 被动语态：动作的承受者+谓语动词的被动形式+动作的执行者 （主语） （宾语）,说明： （1）要将主动句里的宾语变为被动句中的主语，若主动句中的宾语为人称代词，要将宾格变成主格。 （2）把主动句中的主语变为被动句中的宾语，主格变宾格，并由by引导。 （3)谓语动词变成相应的被动形式。,1. feel,look,sound,taste,smell，等系动词用主动表被动意义。 例： It smells wonderful. Mooncakes taste delicious.,2. 在be worth doing中,doing表被动意义。 例：This book is worth reading.,课堂练习 （一）改写句子 1. We plant trees in spring every year. _ by us in spring every year. 2. She posted the letter yesterday. _ by her yesterday. 3. Mr Turner gave me a birthday present. _a birthday present by Mr Turner. 4. I will buy a book tomorrow . A book _ by me tomorrow . 5. She is going to write a letter. _ by her.,Trees are planted,The letter was posted,I was given,A letter is going to be written,will be bought,1.- Do you like the cloth? - Yes, it _ very soft. A. is feeling B. felt C. feels D. is felt 2 It is difficult for a foreigner _Chinese A write B to write C to be written D written 3 The accident _ ten minutes ago . A. happened B. was happened C. happening D. happen 4 The meeting _ tomorrow . A. will hold B. is holding C. will be held D. is held 5 The song _ by many teenagers now . A. is love B. was love C. was loved D. is loved,