新人教高二英语必修五unit3_grammar.ppt

一、过去分词的形式: done 二、过去分词一般表示完成的、被动 的动作。 三、过去分词的作用: 做定语，表 语，状语，补足语。 过去分词作状语: 1. 表示被动的和完成的动作。 e.g. Given more attention, the tree can grow better. 2. 过去分词作状语时，其逻辑主语为主句的主语。 Written in French, the letter cannot be understood. Written in French, I cannot understand the letter. 过去分词与现在分词作状语 过去分词表完成、被动,与主句主语之间是被动关系;现在分词表进行,主动,与主句主语之间是主动关系。 观察下列的句子: Once published, his works (=Once his works was published, ) became famous for the absence of rhyme at the end of each line. 过去分词作时间状语 1. When it is heated, ice will be changed into water. When heated, ice will be changed into water. 2. When it is seen under a microscope, a fresh snowflake has a delicate six-pointed. （When）Seen under a microscope, a fresh snowflake has a delicate six-pointed shape. 过去分词作原因状语 1. Since/ As she was given advice by the famous detective, the young lady was no longer afraid. Given advice by the famous detective, the young lady was no longer afraid. 2. Because it was done in a hurry, his homework was full of mistakes. Done in a hurry, his homework was full of mistakes. 过去分词作条件或者假设状语 If they had been given more attention, the cabbages could have grown better. Given more attention, the cabbages could have grown better. 2. If I am compared with/to you, I still have a long way to go. （If）Compared with /to you, I still have a long way to go. 作方式或伴随情况状语 The hunter left his house, followed by his dog. The hunter left his house, and he was followed by his dog. 2. She sat by the window, lost in thought. She sat by the window, and she was lost in thought. lost 表示一种迷失的心理状态 过去分词作状语: 过去分词有两大特点： 1. 表被动的动作； 2. 表已经完成的动作, 因此,当过去分词作状语的时候一定要搞清楚分词与主语的逻辑关系－－被动, 例如: Rewrite with proper conjunctions 1. United we stand, divided we fail. If we are united, we will stand, but if we are divided, we will fail. 4. Given more time, we would be able to do the work much better. If we were given more time, we would be able to do the work much better.