英语必修4备课课件：Unit2《Workingtheland》Language[人教版].ppt

Section Ⅲ　Learning about Language Using Language ;Ⅰ.重点单词 一、将下列单词与所对应的英文解释连线 1．discovery　　A．to draw a line under a word， sentence，etc. 2．reduce B．to make sth.less，smaller，cheaper， etc. 3．underline C．an opinion that you express about sb.or sth.; 4．comment D．an act of finding sb./sth. 5．nutrition E．the process by which living things receive the food necessary for them to grow and be healthy 答案：1.D　2.B　3.A　4.C　5.E ; 二、根据所给词性和汉语意义写出英语单词 1． vt.使迷惑；使为难→ adj.困惑的，烦恼的→ adj.令人困惑的→ n．困惑；混乱 2． vt.遗憾；惋惜n.遗憾；懊悔→ adj.遗憾的，后悔的→ adv.遗憾地；痛惜地 3． adj.化学的；关于化学的→ n．化学 ; 4． n．生产；制造→ vt.生产；制造 5． n．矿物；矿石→ n．矿，矿山 6． n．发现；发觉→ vt.发现；看出 7． vt.减少；缩减→ n．减少；缩小 8． n．总结；摘要；概要→ vt.概括；总结; Ⅱ.重点短语 根据汉语意思补全短语 1． sale待售 2． need of需要 3．cause damage 给……造成损害 4．wash 将……洗掉，洗净 5．build 逐渐增强；建立；开发 ; 6．lead 导致；造成(后果) 7． addition另外 8．turn 转向，向……求助 9．focus 集中(注意力、精力等)于…… 10．keep...free 使……免受(影响、伤害等)；使……不含(有害物); confuse vt.使迷惑；使为难(P13) ①They asked so many questions that they confused me. 他们问了许多问题，都把我弄糊涂了。 ②You confused Australia with Austria. 你把澳大利亚和奥地利搞混了。 ;③Many people are confused about the new ways of measuring temperature. 许多人都搞不清测定温度的新方法。 ④Mr Wang asked so many difficult questions that I was confused. 王先生问了如此多难题，以至于我感到很迷惑。 ⑤I was confused about the confusing murder. 我对这个令人困惑的凶杀案感到困惑。; ⑥Their questions were confusing. 他们的问题令人困惑。 ⑦There was some confusion as to whether we had won or lost. 不清楚我们究竟是赢了还是输了。 ; [归纳拓展] (1)confuse A with / and B把A与B混淆 be confused about对……感到困惑 be confused by被……搞糊涂了 be confused that...对……困惑 (2)confused adj.困惑的，烦恼的 confusing adj.令人困惑的 confusion n．混乱；困惑;[形象助记] The confused look on her face suggested she was confused about the confusing instructions. 她困惑的表情表明她对那些令人迷惑的说明感到困惑。; [即境活用] 1．用confuse的适当形式填空 ①This is a________problem which many scientists don’t know how to solve. ②What