外研版（2019）高中英语必修第一册 Unit5 Using language 名师课件.pptx

教学教材：外研版高中英语新教材必修一;Lesson 1 Starting out & vocabulary 与动物有关的英文习语、英国人饲养宠物的情况;;Activity 1 Reviewing;;Eventually, it manages to reach the places where it will spend the winter. The solution to the mystery of the monarch's amazing ability comes at a time when it is in serious trouble. Sadly, human activity is the main reason why the number of monarch butterflies is falling. In many of the places where the butterfly can be found, people are destroying the natural environment. ;; Eventually, it manages to reach the places where it will spend the winter. 2. The solution to the mystery of the monarch's amazing ability comes at a time when it is in serious trouble. ;;关系副词判断步骤: 首先要看先行词。如果先行词是表地点的名词，关系副词可用where； 如果先行词是表时间的名词, 关系副词可用when; 如果先行词是reason(s), 关系副词可用why。; 当关系词在定语从句中作时间、地??、原因状语时，应使用关系副词when, where, why。 关系副词的作用如下： ①指代表示时间、原因、地点的先行词 ②先行词中充当句子成分——状语 ③起连接作用，把先行词跟定语从句连 接起来;（一）when引导定语从句的用法 当先行词是表示时间的名词，（如time, day, year, month, week等），且关系词在定语从句中作时间状语时，定语从句用when引导。 E.g. ①I still remember the time when I was in college. ②I have forgotten the exact date when this country became independent.;（二）where引导定语从句的用法 当先行词是表示地点的名词（如place, room, mountain, airport等），且关系词在从句中作地点状语时，定语从句用where引导。 E.g. This is the hotel where they stayed.;此外，当先行词为 position，point，case，stage，situation，atmosphere等，且关系词在定语从句中作状语时，也要用关系副词where 引导。 eg. They have reached the point where they have to separate with each other.;（三）why 引导的定语从句 当先行词是表示原因的名词reason，且引导词在从句中作原因状语，定语从句用why引导，且只能引导限定性定语从句。 E.g. This is the reason why he left in a hurry.;关系副词when, where 可用于非限制性定语从句，而关系副词why不可以。 例如： The year 1949 is very important, when People’s Republic of China was founded. We will visit a factory, where my father once worked. ;Attributive clauses 定语从句 (2) —关系副词的用法 ;Activity 3 Summarizing;In April 2017, two giant pandas from China arrived at a zoo in the Netherla