【课堂新坐标】（教师用书）2013-2014学年高中英语 Module 4 Period Ⅲ Integrating Skills Grammar同步备课课件 外研版必修4.ppt

④He thought there was only one way to do this—by crossing different species of rice plant，and then he could produce a new plant which could give a higher yield than either of the original plants. ⑤The results of his experiments were published in China in 1966. ⑥Finally，in 1970 a naturally sterile male rice plant was discovered. ⑦Researchers were brought in from all over China to develop the new system. 被动语态 一、被动语态的时态、人称和数的变化 一般时态 进行时态 完成时态 现在 am/is/are＋过去分词 am/is/are＋being＋过去分词 has/have＋been＋过去分词 过去 was/were＋过去分词 was/were＋being＋过去分词 had been＋过去分词 将来 shall/will＋be＋过去分词 / shall/will＋have been＋过去分词 过去将来 should/would＋be＋过去分词 / should/would＋have been＋过去分词 二、被动语态的使用场合 1．当不知道或没有必要指出动作的执行者时，常用被动语态。 Their wedding will be held in the church. 他们的婚礼将在教堂里举行。 2．突出或强调动作的承受者时，常用被动语态。 Two novels have been written by him so far. 迄今为止他已经写了两部小说。 三、进行语态转换时须注意的问题 1．不及物动词不能用于被动语态；表示状态的动词一般不用于被动语态。 Great changes have been taken place in my hometown.(误) Great changes have taken place in my hometown.(正) 我的家乡发生了巨大的变化。 2．含有双宾语的主动句变被动句时，可将其中一个宾语变为主语，另一个保持不动，一般将间接宾语变为主语的情况居多。将直接宾语变为主语时，间接宾语前要加上适当的介词。 My uncle gave me a present on my birthday. 我过生日的时候，叔叔给了我一份礼物。 →I was given a present by my uncle on my birthday. →A present was given to me by my uncle on my birthday. 3．“动词＋介词或副词”构成的动词短语变被动语态时，不可将介词或副词与动词拆开。 These books are taken good care of. 这些书被照料的很好。 His request was turned down. 他的请求遭到了拒绝。 4．带复合宾语(宾语＋宾补)的动词变被动语态时，一般把复合结构中的宾语变成主语，而把宾补放在动词之后。 We always keep the classroom clean and tidy. 我们总是保持教室干净而且整洁。 →The classroom is always kept clean and tidy by us. 【提示】　see，watch，hear，notice，listen to，look at，make等感官动词或使役动词后作宾补的不定式不带to，但当宾补变为主补时，必须加上不定式符号to。 We often hear him play the guitar. 我们经常听到他弹吉他。 →He is often heard to play the guitar by us. 5．主动形式表示被动意义的情况。 (1)write，sell，wash，cook等表示主语内在品质或性能的行为动词加副词可表示被动含义。 The cloth washes easily.这块布易洗涤。 The new product sells well.这种新产品很畅销。 The pen writes smoothly.这支钢笔写字很流畅。 (2)某些感官动词和系动词(如feel，look，seem，taste，sound等)加形容词可表示被动意义。 —Do you like the materi