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1、Unit 4 Then and now,第一课时 Part ALets try Lets talk,Warm-up,Lets spell,is-are-go-can-see-watch-read-look-,was,were,went,could,saw,watched,read,looked,Lets try,听力原文,Miss White:Children,please welcome Wu Yifans grandfather to the class.Class:Welcome!Grandpa:Wow!The school is very different from my old s
2、chool.There were no computers at all before.Mike:Really?How did you learn?Grandpa:We listened to the teachers and read lots of books.,Lets try,Lets talk,Grandpa:Wow,a library!There was no library in my old school.Sarah:Tell us about your school,please.Grandpa:There was only one small building on a h
3、ill.Wu Yifan:Could you see stars at night？Grandpa:Yes,I liked the stars.Sarah:Me too.One day Im going to visit the moon.Wu Yifan:The Americans took about five days to get there in 1969.Sarah:How do you know that？Wu Yifan:Easy,I looked it up on the Internet.Grandpa:Ah!There were no computers or Inter
4、net in my time.What was Grandpas school like?,Lets talk,What was your school like five years ago?What is it like now?Draw and talk.,Tell us about your school,please.请给我们讲一讲您的学校吧。,知识点,句型结构及用法句型结构为：“Tell+sb.+about+其他.”用于请求别人讲述关于某方面的信息，是一个祈使句。about是介词，意为“关于”。在此句型中，后接想要知道的信息。例句：Tell us about your daily
5、life.请给我们讲一讲你的日常生活吧。,考向,典例,拓展,祈使句表示请求、命令、叮嘱、邀请、劝告等，读的时候一般用降调。其否定形式是在谓语动词前加Dont。例句：Dont be late for school.上学不要迟到。,Tell _about that film，please.A.theyB.weC.them,C,There was only one small building on a hill.以前只有一栋很小的建筑物在山上。,知识点,例句：Im 1.55 metres tall.我身高1.55米。,there be结构的肯定句“There was/were+主语+地点.”是th
6、ere be结构的一般过去时态的肯定句，表示“某地（过去）存在某人/物。”，was 后接单数名词或不可数名词，were后接可数名词的复数形式。,考向,例句：There were many old trees here ten years ago.十年前这儿有许多古树。,易错点提示,there was/were.后接多个人或物时，be动词的单复数形式要与离它最近的主语在数上保持一致。,例句：There were many flowers and a big tree in the garden two years ago.两年前花园里有许多花和一棵大树。,单项选择。There _ many tr
7、ees on the hill three years ago.A.wereB.areC.was,典例,B,took的用法took是take的过去式，在此意为“费时”，其后接表示时间的名词（短语）作宾语。常用于句型“It takes/took（+某人）+时间+to do sth.”意为“做某事花费（某人）多长时间。”例句：It took me almost two hours to finish todays homework.完成今天的家庭作业花了我近2个小时。,考向1,The Americans took about five days to get there in 1969.美国人在1
8、969年花了大约五天抵达那儿。,知识点,其他用法,考向2,用法这是一个询问他人如何得知某件事的句型。句型结构：How+助动词+主语+know+其他？How询问方式，助动词的形式由主语来定，know后接宾语，表示知道的内容。例句：How does your brother know that?你哥哥怎么知道的？,知识点,考向,How do you know that?你怎么知道的？,知识点,Easy,I looked it up on the Internet.简单，我上网查过。,考向,easy/izi/adj.容易的,例句：Its easy for him to swim.游泳对他来说很容易。
9、,比较级：easier反义词：difficult困难的短语：so easy如此简单形近词：east n.东；东方,归纳意义相反的单词，把它们放在一起记忆的方法就是反义词记忆法。如：easy容易的difficult困难的,反义词记忆法：,look up（在词典中或通过电脑）查阅,例句：We can look it up in the dictionary.我们可以在字典中查阅它。,考向,用法：look up接名词作宾语时，名词即可置于look与up之间，也可置于up之后；look up接代词作宾语时，代词只能放在look与up之间。例句：You can look up words in a di
10、ctionary.你可以在字典中查单词。,一词多义：look up 向上看,拓展,Internet/ntnet/n.互联网,例句：You can find them all on the Internet.你可以在互联网上把它们都找到。,考向,短语：on the Internet 在网上 Internet bar 网吧,There was no library in my old school.我以前的学校里没有图书馆。There were no computers or Internet in my time.我那时候没有电脑和网络。,知识点,there be结构的否定句句型结构：(1)Th
11、ere wasnt/werent+主语+地点.(2)There was/were no+主语+地点.,考向1,这是there be结构的一般过去时态的否定句，表示“某地（过去）不存在某人/物。”“no+单数名词”相当于“not a/an+单数名词”;“no+复数名词/不可数名词”相当于“not any+复数名词/不可数名词”。例句：河上以前没有桥。There was no bridge over the river before.There was not a bridge over the river before.,易错点提示,并列结构中，or代替and用于否定句。例句：There is no air or water on the moon.月球上没有空气和水。,There were no boys _ girls in the classroom two minutes ago.A.andB.orC.but,典例,B,Homework,听录音，跟读“Lets talk”部分的对话。,
