Unit 5 Languages Around the World Discovering Useful Structures 课件-2023-2024学年高一英语人教版（2019）必修第一册

Unit 5 Languages Around the World Discovering Useful Structures 1 一、关系副词引导的定语从句 关系副词和“介词＋关系代词”引导的定语从句 关系副词 先行词 在从句中 所作成分 when = 介词(at/on/in/during)＋which 时间 时间状语 where = 介词(at/in/on/from)＋which 地点 地点状语 why = for＋which 原因 原因状语 1．when的用法 when指时间，在定语从句中作时间状语。它的先行词通常为time，day，morning，night，week，year等表示时间的名词。 I’ll never forget the time when we visited Xi’an. Do you remember the day when we first met? 先行词是表示时间的词时，关系词是否用when，还需要判断关系词在从句中所作的成分。若做主语或宾语，则用that或which。 We still remember the days when we spent our holiday together. We still remember the days (that/which) we spent together. 2．where的用法 where指地点，在定语从句中作地点状语。它的先行词通常为place，spot，street，house，room，city，town，country等表示地点的名词或point (地步)，case(情况)，situation(情形)，position(位置)，stage(阶段)等表示抽象地点的名词。 I recently went back to the town where my father was born. What are some situations where body language is the only form of communication? 先行词是表示地点的词时，关系词是否用where，还需要判断关系词在从句中所作的成分。若做主语或宾语，则用that或which。 This is the house where we visited the famous writer last year. The house (that/which) we visited last year is over 500 years old. 3．why的用法 why指原因或理由，它的先行词只有reason，why在限制性定语从句中作原因状语。 That’s the reason why (= for which) he missed his bus. I didn’t get a pay rise, but this wasn’t the reason why (= for which) I left. 注意：why只用于限制性定语从句中，在非限制性定语从句中用for which。 I had told them the reason, for which I didn’t attend the meeting. 先行词是reason时，关系词是否用why，还需要判断关系词在从句中所作的成分。若做主语或宾语，则用that或which。 This is the reason why he was late. Please tell me the reason (that/which) he explained to you. 4．the way作先行词 首先要确定关系词在定语从句中作什么成分。 (1)如果关系词在定语从句中作主语或宾语，则用关系代词that或which。 The way (that/which) he thought of to solve the problem was not practical. (2)如果关系词在定语从句中作状语，则用关系词in which，that或省略。 This is the way (that/in which) he learns English. 单句改错 ①I often think of the days when we spent on the island together. ②There are some reasons which they do this. ③I hope I can be admitted to a good college, which I will have a chance to improve my English further.