Unit 3 Section Ⅰ Welcome to the unit and Reading—Preview（Word教参）-【优化指导】2023-2024学年新教材高中英语必修第三册（译林版2020）

Unit 3　The world online I hope we will use the Net to cross barries and connect cultures. ——Tim Berners­Lee 我希望我们能够用互联网跨越障碍，联结文化。 ——蒂姆·伯纳斯·李 [学海淘金] 主题语境——人与社会。通过互联网授课的课程或在线课程在许多国家都很流行。网络课程有很多种，学生们在线观看视频并参加在线活动。有些课程对任何人都是免费开放的，让学生在任何时间任何地点都有学习的机会。 E­learning① Courses that are taught through the Internet, or online courses, have become popular in many countries. There are different kinds of online courses，but most show a video of a teacher and students in a classroom. Students watch the video online and take part in online activities. Some courses are free and open to anyone，giving students anywhere the chance to study at any time. Other kinds of e­learning are being tested around the world. Some schools in Singapore，for example，have tablets (平板电脑) and touch screens instead of books and blackboards in the classrooms. There are also social media platforms② to help the students work together on projects，and online “worlds” where the students can interact③ with each other and the digital④ environment while completing different risks. In South Korea，some students are taught English by teachers abroad. The teachers are in their home countries and are connected to the Korean classrooms through the Internet. [词海拾贝] ①e­learning n．网络化学习 ②social media platform社交媒体平台 ③interact v．互动 ④digital adj.数字的；数码的；手指的 Section Ⅰ　Welcome to the unit and Reading—Preview [对应学生用书P69] [清障单词] 1．frontier n. 国界，边界；尖端，边缘 2．obviously adv. 显然，明显地 3．access n. 机会，权利；路径，通道 vt. 到达，进入，使用 4．extent n. 程度，限度；范围 5．majority n. 大部分，大多数； 多数票 6．deliver vt. 递送，传送；发表，宣布；交出 7．arrangement n. 安排；布置； 约定；排列 8．establish vt. 建立(关系或联系)；设立；确立；使得到认可；查实，确定 9．instant adj. 立即的，立刻的；方便的 n. 瞬间，片刻；某一时刻 10．comment n. 议论，评论；批评，指责 vi.&vt. 表达意见 [清障短语] 1．to a certain extent 在一定程度上 2．at one's fingertips 掌握(信息)，熟悉、精通(知识等)，了如指掌 3．bring up 使显示在计算机屏幕上，调出； 提出 4．above all else 最重要的是，尤其是 5．be aware of 意识到 Step 1　Read for the structure Step 2　Careful reading Read the passage carefully and choose the best answers. 1．Which w