Unit 1 Learning about Language必修5.ppt

3. Don’t use words, expressions, or phrases _______ only to people with specific knowledge. A. being known B. having been known C. to be known D. known 【解析】选D。know与words，expressions，phrases构成动宾关系，故用过去分词表示被动。 4. The flowers _______ sweet in the botanic garden attract the visitors to the beauty of nature. A. to smell B. smelling C. smelt D. to be smelt 【解析】选B。此处为现在分词作定语，修饰flowers。smell为系动词，不能用于被动语态，相当于which/that smell sweet。 Homework Finish off the exercises on Page 5. Pick out the sentences using the past participle from the text . No man is born wise or learned. 人非生而知之。 * * * * * * * * * * * * * * * * * * * * * * * * * * * Unit 1 Great scientists Learning about Language Learn about the usage of the past participle. Learn some special structures. The river is polluted. (过去分词作表语） This is a polluted river. （过去分词作定语） 过去分词 1.构成: v .+ed 或不规则变化的动词 2.过去分词本身的含义: 被动或完成 a broken heart a lost dog a ploughed field a risen sun a grown-up daughter an escaped prisoner a retired general ① 不及物动词的过去分词作定语，表示动作的完成。 fallen leaves 落叶 returned students 归国留学生 ② 及物动词的过去分词作定语，表示被动及动作的完成。(与所修饰的词是一种逻辑上的动宾关系) the boiled water 开水 a developed country 一个发达国家 一、过去分词作定语 1. 过去分词作定语，具有形容词的性质。 一般来说，单个过去分词作前置定语: He is a respected leader. a recently-built house home-grown vegetables man-made fibers 过去分词短语作后置定语: Young people brought up in the new society can’t imagine the bitter life in the old days. 2. 作定语时可用定语从句代替。 He is a respected leader. = He is a leader__________________. Young people brought up in the new society can’t imagine the bitter life in the old days. = Young people____________________________ ____________ can’t imagine the bitter life in the old days. who is respected who were brought up in the new society 【真题在线】 1. (2012·山东高考)After completing