高中英语必修二_unit3.pptVIP

Unit 3 computer;common;用 common usual ordinary填空;common, ordinary和usual的区别:; Can you put them in an order according to the time when they appared? 你能按照他们现世的时间顺序把他们排列成序么？ in order按照顺序; out of order次序紊乱(机器等)失灵; 出故障有病；违反议事规则;calculate v. 计算，认为，打算，指望;sum .n. 金额; 款项; 总数; 总和 1). He was fined the sum of 200. 他被处以200英镑罚金。 2). The sum of 5 and 3 is 8. 5加3的和是8。 [重点用法] in sum 简言之; 总而言之 sum sb/sth up 形成对某人[某事物]的看法; begin as 作为…开始;it nearly took two hundred years before I was built as an analytical machine… 差不多到了200年之后我才被做成分析机. it take sb. +一段时间+to do sth.花费某人一段时间做某事 it took/was +一段时间+before......在一段时间后... it didnt take/wasnt +一段时间+before... 没过一段时间就... it will be /take +一段时间+before...要过很长一段时间才... it wont be /take +一段时间+before..不会要多长时间就...;As the years have gone by, I have been made smaller and smaller. 一年一年过去了，我被制造得越来越小。 此处as引导时间状语从句，表示“一边……一边”、“随着”之意。 go by （时间）过去，流逝；经过，走过（某处）。 Several years went by before we met again. 过去了好几年我们才再度见面。 go after 追求 go against 反对 go ahead 先行一步；进展 go over 复习 go out 熄灭 go though 经历；经受；仔细检查 go on with 继续 go away with与某人一块离开 go in for 爱好；从事 go off 悄悄离开；食物变坏 go into 进入 go on进展；时间的过去（重过程 ） ;As a result I totally changed my shape. 结果，我已经改变了我完全的形状。;explore vt. vi. 勘探; 探测; 探险 exploration n. 勘探; 探测; 探险 exploratory adj. 勘探的; 探测的; 探索的 1) We’ll take a voyage of _________. (explore) 2) Columbus discovered America but did not ________ the new continent. (explore) 3） They’re making ___________ medical tests. (explore);anyhow 总之；无论如何；不管怎样 == anyway somehow 以某种方法；莫明其妙地 somewhat 有点；多少；几分；稍微 ; goal n. 球门；进球得的分；目标; advantage n.优点；优势；有利条件 1). He has the advantage of a steady job. 他有工作稳定的有利条件。 2). They took full advantage of the hotels facilities. 他们充分利用旅馆的设备。 [重点用法] take advantage of 对……加以利用；欺骗 to sb.’s advantage 对某人有利 have /get/win an advantage over （of）胜过；优于; signal n. 信号, 手势, 声音, 暗号 v. 发信号; 用信号传达; 用信号与……通讯 1). A red light is usually a signal for/of danger. 红灯通常是危险的信号。 2). He