内容正文:
Unit 1
Reading 1
The evolution of video and sound devices
高中英语 选择性必修(第三册)
B6 Unit 3
Back to the past
Learning aims:
By the end of this class, you will be able to:
Learn to identify the structure of articles;
Learn to analyze long and complex sentences;
Learn to use sentence patterns and get much writing practice.
Pattern1 教材 P30
It would take 500 years before a larger fleet sailed the seas.
要过500年才有更大的船队在海上航行。
句式剖析:
本句含有before引导的时间状语从句。
考点提炼:before 引导时间状语从句
before做连词,引导时间状语从句时,表示从句动作发生之前的时间,在句中的译法很灵活。通常可译为“在......以前;......之后才”。
句式总结:
It+时间段+before...(一般过去时)过了多长时间才......
It will be时间段+before ...(一般现在时)要过多长时间才......
It was not long before...(一般过去时)没过多久就......
It will not be long before...(一般现在时)过不了多久就会......
区别:It is/has been+时间段+since...(一般过去时)自......以来已经有多长时间了
1.Write it down ________________.
在你忘记之前,赶快把它写下来。
2.It was three days ________________.
三天后他才回来。
3.It ________________ before he comes back.
要过三天他才会回来。
4.____________________ we meet each other again.
要不了多久我们就能再见面了。
before you forget it
before he came back
will be three days
It won't be long before
Pattern 2 教材 P30
Zheng He’s efforts helped develop and strengthen harmonious relations with these countries and regions, exposing foreign people to Chinese culture, and allowing the Chinese to better understand overseas lands.
郑和的努力有助于发展和加强与这些国家和地区的和谐关系,让外国人接触中国文化,并让中国人更好地了解海外的土地。
句式剖析:
两个并列的现在分词短语exposing...和allowing...在句子中做结果状语。
考点提炼:现在分词(短语)做结果状语
现在分词(短语)做结果状语时,它所表示的动作与句子的主语之间构成逻辑上的主动关系,且常表示自然而然的结果。
Newly-built wooden cottages line the street, _________(turn) the old town into a dreamland.
新建的小木屋沿街排成一行,将这个古老的小镇变成了一个梦幻之地。
An earthquake happened, _________(cause) great losses.
一场地震发生了,造成了巨大的损失。
They brought in a new machine, thus _________(increase) the production.他们引进了一台新机器,从而增加了产量。
turning
causing
increasing
区别:不定式(短语)也可以做结果状语,常表示的是意想不到的结果。常用以下几种结构:
only to...不料(却)......;结果(却) ...enough to...足够......可以......
too...to...太......而不能...... so/such...as to...如此......以至于......
He hur