高中英语 Module 5 A Lesson in a Lab Section Ⅲ Grammar-比较等级教学案 外研版必修1-外研版高一必修1英语教学案

Module 5 A Lesson in a Lab Section Ⅲ Grammar-比较等级语法图解探究发现①The earth is fortynine times as large as the moon.②The earth is fortynine times larger than the moon.③This stone bridge is twice the length of the wood one.④The book is as interesting as that one.⑤It’s getting brighter and brighter!⑥The closer you are, the more you’ll see.⑦We need a piece which is much bigger than that.⑧The physics lesson was a lot more interesting than the chemistry lesson.⑨He has never spent a more worrying day.⑩His whole school education added up to no more than one year.[我的发现](1)例句①②③为倍数表达法，其结构分别是：句①倍数＋as＋形容词＋as；句②倍数＋比较级＋than；句③倍数＋the＋性质名词。(2)例句④为原级比较，其结构是：as ＋形容词＋ as 。(3)例句⑤⑥⑦⑧⑨⑩是比较级的表达。其中例句⑤的结构是“比较级＋ and ＋比较 级”；例句⑥的结构是“the ＋比较级， the ＋比较级 ”；例句⑦⑧中分别用 much,_a_lot 修饰比较级；例句⑨中用“否定词＋比较级”表示最高级；例句⑩是比较级的特殊句式。一、英语倍数表达法1．倍数表达法的三个常用句型(1)倍数＋as＋adj./adv.＋asThis big stone is three times as heavy as that one.这块大石头的重量是那一块的三倍。(2)倍数＋比较级＋thanThis hall is five times bigger than our classroom.这个大厅是我们教室的五倍大。(3)倍数＋the＋性质名词(size, height, width, depth, length 等)＋ofThis hill is four times the height of that small one.这座山的高度是那座小山的四倍。[名师点津] 英语中，用 twice 或 double 表示两倍，三倍或三倍以上用基数词＋times，如 three times, four times。[即时演练 1] 一句多译这条街是那条街的四倍长。①This street is four_times_longer_than that one.②This street is four_times_as_long_as that one.③This street is four_times_the_length_of that one.2．倍数表达法的两个变体(1)倍数＋what 从句The rainfall this year is twice what it was last year.今年降雨量是去年的两倍。(2)倍数...