必修五unit1语法.pptVIP

Grammar 一、过去分词作 定语 1、构成: v +ed 或不规则的变化动词 2. 过去分词本身的含义: 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 newly-arrived visitors 新到的客人 ② 及物动词的过去分词作定语，表示被动及动作的完成。 the cold boiled water 冷开水 a developed country 3.位置： ①单个过去分词作前置定语 : a recently-built house home-grown vegetables man-made fibers ② 过去分词短语作后置定语，表示被动和／或完成意义。 I like wearing clothes made of this kind of cloth． The books written by Lu Xun are popular． He visited the bridge built last year. The bridge to be built next year will be very large. Have you noticed the bridge being built now? 二、过去分词作表语 1、过去分词作表语，表示主语的特点或所处的状态，其前的系动词有包括be在内的多种形式。 e.g.：Everyone present is very inspired at his speech． 听了他的发言，在场的所有人都很振奋。 You seem frightened. 你似乎受了惊吓。 Some problems still remained unsolved. be动词和系动词 1、be 动词 2、表示变化的动词:become, get, turn, go, grow等 3、感官动词:look, feel, smell, taste, sound等 4、还有 stay, keep, remain, turn out 等 （１）作表语的过去分词，被动意味很弱，主要表示动作的完成和状态，此时相当于一个形容词。 Linda worked for the Minnesota Manufacturing and Mining Company, ______ as 3M. A. knowing B. known C. being known D. to be known 2. The disc, digitally ________ in the studio, sounded fantastic at the party that night. A. recorded B. recording C. to be recorded D. having recorded 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 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 Practice 1. Prices of daily goods ____ through a computer can be lower than store prices. A. are bought B. bought C. been bought D. buying 3. Don’t use words, expressions or phrase ____ only to people with specific knowledge. A