2014年秋高中英语同步学案:Module 5 A Lesson in a Lab(第二课时)(外研版必修1)( 2014高考).doc
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A Lesson in a Lab
第二课时
学习目标: (1)分数、百分数的正确写法
(2)三种表达倍数的句型
(3) 修饰比较级的程度副词
自主梳理:
Step 1、词汇学习
重点词汇:expand, contract, electricity, conclusion, partial, ordinary, dissolve, facility, astonished
expand . contract
课文原句:When you heat a metal, it expands. When you heat a metal, it contracts. (Page 41)
expand和contract是一对反义词。expand在本句中的意思是“在面积上扩张、膨胀”, contract1.?使…变大, 扩大, 扩张, 增强(尺码、数量或重要性)2.?伸展, 伸开, 张开, 展1.?染上(恶习, 疾病等)2.?(使)收缩,(使)紧缩;(使)缩短;(使)皱缩
electronic, electric
electric adj. 电的,用电的,电动的
electrical adj. 与电有关的,电学的,
electricity n. 电,电流
electronic adj. 电子的,与电子有关的
electrician n. 电工
3. conclusion n.
in conclusion, draw a conclusion
conclude,include,contain的辨义
contain和include 都有“包含”的意思,contain可用于表示包含所含之物的的全部 或部分,而include则只能用于表示所包含之物中的一部分The parcel included a dictionary. 那包裹里也包括了一本字典。 The parcel contained a dictionary. 那包裹里装的是一本字典。include: 包括;包含The health club includes a gym,mming pool , and locker room.
contain: 包含,含有,装有The bowl contains a variety of fruit. 碗里装有各种水果。 This bottle contains two glasses of beer. 这个瓶子装了两杯啤洒。common常见的,如common sense
usual经常的
ordinary普通的平常的
normal正常的
general一般的,普遍的1.(指液体)使(固体)溶解; [dissolve (in sth)] (指固体)溶解;[dissolve sth (in sth)] 使(固体)溶解 2. [dissolve sth (away)] 除去,消除(某固体物质,尤指脏物) 3.[dissolve (in sth) ]消失,消散 4.(使某事物)终止,结束,解除,解散 (指委员会或集会)表决;作出决定;作出决议2.?解决(问题、疑问.、困难等)3.?分解, 解析(某物)4.?使决意;使下决心
—apparatus(装备,仪器)—method—result—conclusion
10. About apparatus: test tube, tongs, Busen burner, balance, crucible, test tube holder, cotton wool,
11. About Metal: Potassium(钾), Sodium(钠), Calcium (钙), Magnesium(镁), Aluminum(铝),Zinc, Iron, Copper
重点领悟:
Exist as, a mixture of …and…, electrical equipment, react with, put …in order, partial reaction, iron nail, oil layer, add…to,
First-class scientist, be proud of, be supposed to ,
Language Points
倍数的表达法
A+ times +as+ adj. + as + B
A + times + 形容词比较级+ than + B
A + times + the size( length, width, height, depth) of + B
探究提升:
The science facilities are very good, with laborato
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