英语：必修1-module5-a-lesson-in-a-lab-language-points课件(外研版).pptVIP

Module 5 A lesson in a lab Language points Put the words in pairs or groups: air——gas——oxygen contract——expand earth——sun——moon gas——liquid——solid Put words in the right place. electricity iron metal steel air glass natural man-made both electricity iron air some metals steel glass some metals electricity some metals (alloy for example) 12,345,678,900 thousand million billion 分子 基数词 分母 序数词 (1)分子=1 单/单 (2)分子1 单/复 % percent Grammar 1 Degrees of comparison (1) 倍数表达法 The brown house’s windows are twice as wide as those of the white house. My handwriting is not half as good as yours. This room is three times as large as that one. (1) A + 倍数＋as＋形容词＋as + B Grammar 1 Degrees of comparison (1) 倍数表达法 The white box is four times deeper than the black box. This road is twice longer than that one. The plane flew nine times higher than the kite. (2) A + 倍数＋形容词的比较级＋than + B Grammar 1 Degrees of comparison (1) 倍数表达法 The red building is twice the height of the grey building. Our school is three times the size of yours. The street is four times the length of that one. (3) A + 倍数＋the size (length, width, height, depth) ＋of + B Grammar 2 Degrees of comparison(2) Winter is coming. It’s getting colder and colder. The girl becomes more and more beautiful. (1) “比较级＋and＋比较级”表示“越来越……” 比较级 Grammar 2 Degrees of comparison(2) 比较级 　“the + 比较级＋the ＋比较级” 　　　表示“越……就越……” The busier my mum gets, the happier she is. The more you read, the more knowledge you will get. react with sth. 化学反应 to sth. 反应 eg. An acid can react with a base to form a salt. How did your mother react to the news? 2.put sth. in order 按顺序排列 in order of … 按…的顺序排列 in order to do sth. 为了做某事 at the top of … at the bottom of … 4.look for 寻找(强调动作) find 找到，发现(强调结果) find out 查明，弄清楚 make sure of sth.