冀教版英語(yǔ)必修3 Unit3 The Computer Section 1 PPT

UNIT3 SECTION1 SECTION 1課件 一 Reading 1 When did the first computer invented? A 1950s B 1960s C 1940s D 1930s According to the text,the answer is A 2 Thanks to the _,computers are now cheap and convenient,and are constantly improving . Answer: silicon chips 3 What do you think of the chip? The chip is the core of a computer and it is to a computer as is the brain to a human 4 What events can show the computer has impruved modern life? 1email插圖 2a chat line插圖 3making studying and teaching more convenient插圖 4downloading some useful information插圖 . Ask Ss to list as many advantages as possible 5 What shows it isnt positive? 1Crime by internet插圖 2A great many addicted teenagers插圖 3Porno黃色書(shū)刊，插圖 4Bad sites . Ask Ss to list as many disadvatages as possible 二 key words 1。affect vt 影響。The change in climate can affect your health. effect. n.影響。構(gòu)成短語(yǔ) have/has a/an .effect on sb/sth.要注意這種形式在定語(yǔ)從句中的應(yīng)用。如： The effect the medicine had on patients was obvious. 警告：effort. 努力 n.構(gòu)成短語(yǔ) make an effort/efforts to do sth./ spare no effort to do sth. 2.convient.adj.方便的。常用物做主語(yǔ)，不修飾人。如：If it is convient to you,please drop in.構(gòu)成結(jié)構(gòu)有：be convient to sb/be convient to sb. 警告：free.adj.空閑的。構(gòu)成結(jié)構(gòu) sb be free. 3.prefer.v.喜歡。構(gòu)成短語(yǔ)：prefer sth/ prefer to do sth/ prefer sb to do/ prefer to do.rather than do.如：1-Who will win the game ? -I prefer class two to 2I prefer to watch TV rather than hang about on sundays. 警告：sb prefer to do .rather than do.可以將rather than do.放在句首。如： 上句可以改為，Rather than hang about ,I prefer to watch TV. . . 4。anyway.adv.相當(dāng)于 anyhow 1. 再說(shuō)。Ive decided to postpone the idea of doing a course,and anyway I got acceped by the Council. 2.不管怎么說(shuō)-I can give you a lift if you wait. -No,Ill walk.Thanks,anyway. 3.至少-All of them? -Some,anyway. 4.究竟What are you phoning for ,anyway? 5。available.adj.可得到的/可利用的。 1.Is the book available here? 2.There is not enough drinking water available in the village. 8。upset .v./adj.不安的/使。不安。 1.He was upset when he heard the news. 2.Do what he wants,or youll upset him. 警告： upset=rather unhappy. nervous=rather afraid anxious=worried. 三。key phrases 1.get through 1 通過(guò)考試 Although he tried his best to do it ,he couldt get through the exam. 2打通電話 The line is bad.I cant get through to Room 211. 警告：go through 的用法。經(jīng)受 = experience go through too much hardship 穿越 go through with=finish. 還有注意下面幾個(gè)get短語(yǔ)的用法。 get along/on .vt/vi.與。相處/進(jìn)展。 He can get along well with his classmates/How is the project getting on? get around/about 行走/到處走動(dòng)/消息傳開(kāi)/避開(kāi) He broke his leg and couldnt get around . Its getting about that the peace talks have broken down. A romour got round that the conference has been cancelled. 四。句型。 1。倍數(shù)+比較級(jí) 1倍數(shù)+ as.as.同級(jí)比較 He ate twice as many apples as I. 2 倍數(shù)+more.than.不同級(jí)比較 He ate once more apples than I. 3倍數(shù)+the size /weight /length/height/.of.其它比較 Our classroom is three times the size of theirs. 警告：1倍數(shù)必須放在比較級(jí)前。 2在同級(jí)比較中，第一個(gè)as是adv所以其后必須是adj/adv. 3注意比較成分的對(duì)等性。 2。not+ all/both/everyone/everything.構(gòu)成部分否定形式，意思是：并非。都。 Not all proved right. Both of us dont agree with you. Its an interesting film,but not to everyones taste. 警告：all/both/everyone/everything的完全否定詞是none/neither/no one/nothing. 3.It all began when-。開(kāi)始于。 1It all began when I was a child. 2It all began when I graduated from Shandong Normal University. 4.as if clause這個(gè)結(jié)構(gòu)常用于虛擬語(yǔ)氣。對(duì)現(xiàn)在虛擬用一般過(guò)去時(shí)，be動(dòng)詞用 were，對(duì)過(guò)去虛擬，用過(guò)去完成時(shí)。 1 A part of a chopstick is in water and it looks as if it were broken. 2It seemed that as if he had known me well. 警告：如果表達(dá)是一個(gè)事實(shí)，就不用虛擬。如： It seems that it is going to rain because of much cloud. 五。Explanation 1 It all began when I went to an Internet Cafe after school. It all began when clause意思是從。開(kāi)始，其中 it可以改為this/that 2 First of all I checked my email and signed on to a chat line after all/above all/first of all 1after all畢竟，終究 Please forgive her .After all,he is a child. 2above all最重要的是=most of all=most important of all I need a nice room.Above all,its comfortable. 3first of all首先表順序 First of all,let me introduce myself. Sign on 登錄 六。辨析 catch up with/keep up with 1catch up with 是在落后的情況下，趕上。 I fell behind and I would tried to catch up with others. 2keep up with意思是“和。保持一致” As a young pioneer,we must keep up with society. . 。