山东省新泰市汶城中学：Unit3Computers第1课时Importantwords）学案（人教版必修二）.doc

第  PAGE 3 页 共  NUMPAGES 3 页 教师寄语：It’s up to you. 未来由你来创造 重点词汇： 1．calculator —calculate (v.) 1)计算,核calculate sth计算(核算)…(数) He calculated the costs very carefully. 2). 估计;预测;推测[+(that)][+wh-] ; 计划,打算;使适合(某种目的)，故意做某事 It has been calculated that…据估算…… I calculate what it’ll cost.我估计那会花多少钱。 His remark was calculated to hurt her.他的话是故意要伤她的。 This advertisement is calculated to attract the attention of the children. 3). 【美】【口】以为,认为[+(that)] I calculate they will soon arrive. 2. sum n. 金额; 款项; 总数; 总和 total n. 总数；合计 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 in total 加起来，合计 a total of… 总共…… eg. 1). In sum, the plan failed. 2). I summed her up as a competent manager. 3).In total, there must have been 2000people. 练习：—Do you know how many students took part in the sports meet? —About 400________. A．all together B．after all C．in total D．at total 3. solve vt.解决,解答 solution n. 解决办法,处理手段 a solution to sth (…..的解决方法) e.g. I don’t think money can solve all problems (1)我认为这个问题不难解决I don’t think this problem (2)How do you deal with the disagreement between the company and the customers? The key the problem is to meet the demand by the customers. A. to solving; making B. to solving; made C. to solve; making D .to solve; make 4. 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 Eg. 1). A red light is usually a signal for/of danger. 红灯通常是危险的信号。 2). He signaled (to) the waiter to bring the menu. 他示意要服务员把菜单拿来。 [重点用法]: signal to sb/sth for sth.用信号传达某信息;用信号与某人通讯 signal with…用……发信号 signal to sb to do 示意某人做 1). The railway signal was on red, so the train stopped. 2). He was signaling with a red flag. 3．(2009年高考湖北卷)In our class，when the bell rang and the teacher closed his book，it was a ________ for everyone to stand up. A．signal B．chance C．mark D．measure 5. explore vt. vi. 探索,探测,探究exploration n. 探索,勘探