Period Ⅱ Using language——Grammar & Vocabulary Grammar(定语从句 2)课前自主预习[观察句子,总结规律]①Somehow they manage to travel around 4,000 kilometres south and find their way to places where they will spend the winter
②The solution to the mystery of the monarch's amazing ability comes at a time when it is in serious trouble
③Unfortunately, human activity is the main reason why the monarch numbers are falling
[我的发现]通过观察可知:(1)句①中定语从句的引导词是关系 ,在定语从句中充当 状语,定语从句修饰表示 的名词 places
(2)句②中定语从句的引导词是关系 ,在定语从句中充当 状语,定语从句修饰表示 的名词 time
(3)句③中定语从句的引导词是关系 ,在定语从句中充当 状语,定语从句修饰表示 的名词 reason
答案:(1)副词;地点;地点 (2)副词;时间;时间(3)副词;原因;原因精讲课时语法关系副词的用法(1)when 指时间,在从句中作时间状语
先行词通常为表示时间的名词,如:time, day, week, year 等
I cannot forget the day when I first saw you
我永远不会忘记第一次见到你的日子
(2)where 指地点,在从句中作地点状语
先行词通常有:place, street, house, city, cou