2023年中考英语语法状语从句课件

状语从句 He went home at 8:00 last night. He didn't go home until his mather called him. 功能: 形式： 作状语 句子 状语从句在句子中充当状语，表示主句动作发生的时间、地点、条件、方式、目的、结果、让步、原因、比较等。 公式： 主句+状语从句连接词+从句 =状语从句连接词+从句，主句 一、 时间状语从句 1. when, while, as 当A句…的时候，B句… 当手机发明的时候，没有人意识到它的危害性。 When mobiles were invented, no one realized their hazard. =No one realized their hazard when mobiles were invented. 2. as+A句,B句=B句+as+A句 【随着A句…,B句…】 随着越来越多的小孩接触互联网，父母开始担心互联网对他们孩子的影响。 As an increasing number of children are having access to the Internet, parents start to concern the influence which the Internet poses on their children. 3. while+A句,B句=B句+while+A句 在A句……期间， B句…… 补：while在雅思中多用于表示转折。 Some people think…while others argue… Animals make huge contribution to the medical breakthrough while they violate animals’ basic rights. 4. Before, after 1）Before+A句,B句=B句+before+A句/时间词 【在A句…之前，B句…】 2）After+A句，B句=B句+after+A句/时间词 【在A句..之后，B句…】 在广告发明之前，人们获得产品信息的方式主要通过与其他人之间的交流。 Before advertising was introduced, the major channel by which people get informed of product information had been to communicate with other consumers. 这个数据在下降到1990年的20%之前，它先上升到1980年的80% Before the figure jumped to 20% in 1990, it increased to 80% in 1980. 5. A句+since+B句/时间短语 【自从B句…,A句就…】 自从手机发明以来，人们的生活发生了巨大变化。 People’s lives have undergone dramatic change since mobiles were invented. 6. A句+until+B句/时间短语 【A句…直到B句…】 The little boy kept crying until he saw his mother. = The little boy did not smile until he saw his mother. not…… until “直到……才……” 直到星球破坏了，人类才意识到环保的重要性。 Humans did not realize the importance of environmental conservation until the planet was destroyed. where引导 A句+where+B句 在B句…地方, A句… 在环境污染严重的地方，许多珍稀物种处于灭绝的边缘。 Many rare animals are on the verge of extinction where environmental pollution is serious. 二、地点状语从句 三、条件状语从句 If引导的条件句 Unless Once As long as 1）真实条件句 如果过分沉迷于打游戏机，肯定会与家人和朋友缺乏足够的感情交流。 If someone overindulges in playing computer games, he is sure to lack emotional contact with his