Unit 2 教学·知识细解码-2021-2022学年新教材高中英语选择性必修第二册【名师导航】同步Word教参(外研版)

1．secure adj.安全的；可靠的→security n．安全 2．motivate v．激发，激励→motivation n．激励，激发 3．occupy v．占用，占去(时间)→occupied adj.使用中的；被占领的→occupation n．占领；工作 4．constant adj.持续不断的；经常的→constantly adv.持续不断地；经常地 5．access n．接触的机会；通道→accessible adj.可接近的，可进入的 6．rely v．(为生活或生存而)依赖→reliable adj.可信赖的；可依靠的 occupy v．使用，占用(空间、面积、时间等)；使用(房屋、建筑)；居住；侵占；占领；占据；使忙于(做某事) ①How much memory does the program occupy? 占用(空间) ②He occupies an office on the 12th floor. 使用(房屋、建筑) ③The capital has been occupied by the rebel army. 占领 ④She occupied herself with routine office tasks. 忙于 Words and Phrases 　security n．安全 (教材P14)　The top four negative aspects of social media as ranked by Chinese users are: reduced time for reading printed books，poorer eyesight，privacy and information security concerns，and reduced sleep time. 按中国用户排名，社交媒体的四大负面因素是：阅读印刷书籍的时间缩短、视力恶化、隐私和信息安全问题以及睡眠时间缩短。 [例1]　They carried out security checks at the airport. 他们在机场实行了安全检查工作。 [例2]　The immediate security threat has disappeared. 眼前的安全威胁已不复存在了。 [造句]　他们加强了边境的安全工作。 They have tightened security along the border. [知识拓展] secure 　　　 adj.稳定的，无忧无虑的 vt.使安全；保卫 be secure against/from 没有……的危险 be secure of 对……有把握；确信 feel/be secure about/as to 对……觉得放心 [即学即练]　单句语法填空 ①Now my house is secure against burglary. ②I feel secure about my future. ③We need to shift(shift) the focus of this debate. 　switch v．(用开关)改变，转换 n．开关，改变，转变 (教材P14)　With the detox now finished，they've switched on their devices and they're back online. 随着脱瘾的结束，他们打开了设备，又重新上线了。 [例1]　Which switch do I press to turn it off? 我按哪个开关就能把它关了？ [例2]　Press these two keys to switch between documents on screen. 按这两个键就可以在屏幕上的文件之间进行切换。 [造句]　最后两门考试的日期调换了。 The dates of the last two exams have been switched. [知识拓展] switch on(＝turn on)　 把开关打开；接通 switch off(＝turn off) 把……关掉；关上 switch over 转换频道；转变 switch...to... 把……转换为…… [即学即练]　单句语法填空 ①Shall we switch to another channel? ②Switch on the computer，please.I want to play computer games. ③Don't forget to switch off all the lights before leaving the office. 　motivate