高中英语人教版 (2019)选择性必修 第二册Unit 1 Science and Scientists集体备课课件ppt

这是一份高中英语人教版 (2019)选择性必修 第二册Unit 1 Science and Scientists集体备课课件ppt，共7页。PPT课件主要包含了that，whether，wh-词，because，what，where，whowhom，look等内容，欢迎下载使用。

▶I’d like t start my wn business—that is what I’d d if I had the mney. 我愿意自己创业——那就是如果我有钱我将会做的事情。▶The discussin is hw we can slve the prblem.讨论内容是我们如何解决这个问题。▶It is because he was careless. 那是因为他粗心。▶The reasn why I didn’t attend the cnference was that I was t busy. 我没有参加会议的原因是我太忙了。▶It sunds as if/thugh smebdy is kncking at the dr. 听起来好像有人在敲门。
【探究总结】表语从句的引导词主要有以下五种。(1) 引导的表语从句:仅起连接作用,无意义,不作任何成分,但不能省略。(2) 引导的表语从句:表示“是否”,不能换为连词if。(3) 引导的表语从句:在从句中充当主语、宾语、表语、状语等成分,且各有各的词义。(4)连词 引导的表语从句: 通常只用于“This/That/It is/was because ...”结构中。当主句的主语是reasn时,其后面的表语从句要用 引导,而不能用because。(5)连词词组 也可引导表语从句:意为“好像,仿佛”。
as if/thugh
【应用实践】 用合适的连接词填空。①The questin is we can make gd preparatins in such a shrt time.②As a famus man nce said, life is happens t yu while yu are busy making ther plans.③The prblem is ne less hur f sleep is nt equal t an extra hur f achievement.④The library was he spent his spare time in cllege.⑤My wrry is I can turn t in case the cmputer crashes.
二、表语从句的特殊句型【观察思考】 ▶The thick smg cvered the whle city. It lked as if a great black blanket had been thrwn ver it.厚重的烟雾覆盖着整个城市,看起来好像把一条厚厚的黑色的毯子扔到了它的上面。We are still behind the ther classes and this is why we shuld wrk harder.我们仍然落后于其他班级,这就是我们要加倍努力的原因。▶Frm space, the earth lks blue. This is because abut seventy-ne percent f its surface is cvered by water. 从太空中看,地球是蓝色的。这是因为地球表面大约71%被水覆盖。
▶The reasn why he is late fr schl is that he missed the early bus.他上学迟到的原因是错过了早班车。【探究总结】(1)as if/as thugh引导的表语从句:as if/as thugh意为“好像,仿佛”,引导的表语从句常跟在系动词(如seem、 appear、 、 taste、 sund、 feel、 smell等)之后。若表语从句所述的是非真实的情况,从句用虚拟语气;若所述的是事实或是极可能发生的情况,从句用陈述语气。(2)其他形式的表语从句:①“This/That/It is why+表语从句(表结果)”表示“这/那就是……的原因”。