Unit1SectionⅢGrammar—过去分词作定语和表语.ppt

点此进入 返回 返回 返回 返回 返回 第3步 Unit1 Great scientists Section Ⅲ Grammar—过去分词作定语和表语 第1步 第2步 Section Ⅲ Grammar—过去分词作定语和表语 ①With this extra evidence, John Snow was able to announce with certainty that polluted water carried the virus. ②From the stomach the disease quickly attacked the body and soon the affected person died. ③So many thousands of terrified people died every time there was an outbreak. ④He found that it came from the river polluted by the dirty water from London. ⑤But he became inspired when he thought about helping ordinary people exposed to cholera. ⑥Nicolaus Copernicus was frightened and his mind was confused. ⑦Several problems remained unsolved when the manager came back. [我的发现] (1)例句①②③④中的过去分词(短语)在句中作 。 (2)例句①②③中为单个的过去分词作定语，常常放于被修饰名词的 ；例句④中过去分词短语作定语，常常放于被修饰名词的 。 (3)例句⑤⑥⑦中的过去分词在句中作 。 定语 前面 后面 表语 一、过去分词作定语 过去分词作定语有前置和后置两种情况： 1．前置定语：单个过去分词作定语时，一般放在被修饰 词语之前，但有些单个的过去分词习惯上往往放在所修饰词语的后面。单个过去分词有时为了强调，也可放在所修饰词之后。 The broken clock should be repaired as soon as possible. 这个坏了的钟表应该尽快修好。 There is little time left.Let’s hurry up. 剩余的时间不多了，我们快点吧。 2．后置定语：过去分词短语作定语时，通常放在被修 饰的词之后，它的作用相当于一个定语从句。 The girl, brought up by her uncle (＝ who was brought up by her uncle), has begun to work now. 由她叔叔带大的那个女孩现在已经参加工作了。 ①He didn’t turn up at the meeting held yesterday. →He didn’t turn up at the meeting yesterday. ②I borrowed a book which was written by Mark Twain from the library. →I borrowed a book from the library. that/which was held written by Mark Twain 3．过去分词作定语需注意的几个问题： (1)及物动词的过去分词作定语，在语态上，表示被动； 在时间上，常表示动作已经发生或完成，有时也不表示时间性。 (2)不及物动词的过去分词作定语，一般作前置定语，它 不表示被动意义，只强调动作完成。 fallen leaves 落叶；the risen sun升起的太阳；a retired teacher 一位退休的教师 过去分词作定语有三种情况： A．只表被动　　B．只表完成　　C．既表被动又表完成 请判断下列句子中的过去分词作定语属于哪种情况 ①Fallen leaves are the leaves which have fallen on the ground. __ __ ②Most of the artists invited to the party were from South Africa.