新深圳牛津版八年级上册Unit-3--Computers精品资料

1、Unit 3Computers词汇及扩展单词&短语词性中文扩展1ordern.2comparev.3speakern.4typev.5controlv.6expensiveadj.7tinyadj.8dependv.9operatev.10companyn.11pricen.12totaln.13sellv.14popularadj.15 work as16 (be) unaware of17 depend on18 grand total19 look forward to20 in addition课文重难点详解1. In the 1940s, the first computer

2、s were bigger than cars.in the 1940s 意为 “在 20 世纪 40 年代 ”，例：在 20 世纪 50 年代表示在某个年代初期或末期，可以在年份前加early 或 late. 例： in the early 1940s2. You may be unaware of them.be unaware of 意为 “未察觉，没有意识到 ” 译：那个男孩没有意识到危险。3. There is probably one inside your TV or washing machine.one辨析：此处用作代词，用于泛指前面提到过的名词。one 和 itoneit泛

3、指上文提到的同类事物中的一个I lost my pen. I must buy one.特指上文提到的同一物品The coat is hers. It s very beautiful.例 ： The banana pie tastes delicious. Could I have another?A oneB itC thisD that4. You depend on computers more than you realize.depend on 意为 “依靠，指望 ”，主语可以是人，也可以是物，其含义有所不同。人依靠depend on物dependentadj.取决于依赖的， 反义

4、词： independent “独立的”depend on = be dependent on译： she depends on us to help her.Our plan depends on the weather.5. Computers almost never give wrong answers.almost never = hardly 意为“几乎不”辨析： hardly 和 hardhardlyhard“几乎不”“努力地，困难地，猛烈地”Alice hardly wears skirts.It rained very hard last night.6. However,

5、one day computers may be able to do a better job than human beings. be able to 意为 “能够 ”，后接动词原形。7. Will we have nothing to do?to do 为动词不定式，此处用来修饰nothing, 如果不定式中的动词是不及物动词，需要带上必要的介词。例： Do you want something to drink ?There is a warm clothes to live in.例： -Why dont you go out to play, Rose?-I m afraid I

6、 can t. I have much homeworkA doB doesC doingD to do.8. What were the first computers like?What + be + 主语 + like? 意为 “ .怎么样？ ”,like 是介词，意为 “像，相似 ”译：今天天气怎么样？辨析： whats sb like, what does sb like与 what does sb look likeWhat s sb like“某人如何 ”用于询问某人的性格，品质等What does sb like“某人喜欢什么 ”用于询问某人的爱好What does sb lo

7、ok like“某人长什么样 ”用于询问某人的外貌9.Some young people always need help from their parents.need用法总结：need sb/ sth 需要某人或某物 sb need to do sth 某人需要去做某事 sth need doing 某物需要被 . neednt用来回来 Must 提出的问句例： I need a pen to write with.例： He needs to have a good rest.例： My bike needs repairing.例： -Must I bring my homework

8、now? -No, youneedn t.重点语法：形容词的比较级和最高级分为规则变化和不规则变化规则变化如下 :1)单音节形容词的比较级和最高级形式是在词尾加-er和-est构成；greatlong2)以-e结尾的单音节形容词的比较级和最高级是在词尾加-r和-st构成；widenice-ier3) 以辅音字母和-est构成；+y结尾的形容词，比较级和最高级是把y去掉 ,加上happyempty5)辅元辅的形容词，比较级和最高级是双写该辅音字母，再加-er和-est；bigfat6)部分双音节和多音节形容词，比较级和最高级需用more和most来构成。beautifuldifficult常用的

9、不规则变化的形容词的比较级和最高级:good/well-better-bestmany-more-mostmuch-more-mostlittle-less-leastbad/ill-worse-worstfar-farther/ further-farthest/furthestold-older/elder-oldest/eldest形容词前如加 less和 least则表示 " 较不 " 和" 最不 "important重要lessimportant较不重要leastimportant最不重要形容词比较级的用法1. 两者比较时用形容词比较级，其结构为 “ .比较级 + than . ”如： Actions speak louder than words.2. 在两者之间选择 “哪一个更 ”时，用句型 “ Which / Who is +比较级 , .or .? ”如： Which sweater is cheaper, the red one or the yellow one?3. 表示 “