高一英语人教版必修4优化指导精品课件5-4.ppt

Section Ⅳ　Grammar Writing;构词法 在英语中，词的构成方法主要有三种：合成、转化和派生。;构成方式;2.合成形容词;3.合成副词;4.合成代词;5.合成动词;二、派生法(Derivation) 由一个词根(root)加上前缀(prefix)或后缀(suffix)构成一个新词的方法叫做派生法。 1．前缀 前缀一般只改变单词的意思，不改变词性。;分类;2.后缀 后缀常会改变单词的词性，构成意思相近的其他词性；少数后缀还会改变词义，变为与原来词义相反的新词。;分类;三、转化法(Conversion) 指在词形不发生变化的情况下，由一种词性转化为另一种或几种词性的构词形式。常见的有以下几种形式：;Ⅰ.请将括号中所给的单词加上适当的前缀或后缀完成下列句子 1．The inventor was rewarded by the government for his scientific .(achieve) 答案：achievements;2．The reason you just gave me for not passing the exam is not .(convince) 答案：convincing 3．She can get angry very easily when others with her.(agree) 答案：disagree;4． speaking，I dont like the way that you spoke to your father.(honest) 答案：Honestly 5．I would much rather be a director than an .(act) 答案：actor/actress 6． ，I was caught in the heavy rain and got wet through from head to foot.(fortunate) 答案：Unfortunately;7．He the question and got the wrong answer.(understand) 答案：misunderstood 8．It seemed as if the boss was very with our work.(satisfy) 答案：satisfied/dissatisfied;9．She was such a and generous lady that all of us respected her.(warm，heart) 答案：warm-hearted 10．Lets stop here.Ill leave the rest of this adventurous story to your .(imagine) 答案：imagination;Ⅱ.单项填空 1．(2012天津高考)Parents and children should communicate more to the gap between them so that they can understand each other better. A．open　　　　　　　　　B．narrow C．widen D．leave 解析：考查动词词义辨析。句意：为了缩小代沟，进而增进彼此间的理解，父母同子女之间应该多交流。根据句意及gap(代沟)可知narrow(使变窄)符合。 答案：B;2．(2012辽宁高考)We used to see each other ，but I havent heard from him since last year. A．especially B．regularly C．particularly D．approximately 解析：句意：我们过去经常见面，但是自从去年我就失去了他的音讯。especially“特别地，专门地”；regularly“经常”；particularly“特别，尤其”；approximately“近似地，大约”。 答案：B;3．(2012山东高考)My first of him was that he was a kind and thoughtful young man. A．expression B．attention C．satisfaction D．impression 解析：句意：我对他的第一印象是他是一个善良而又体贴的年轻人。impression意为“印象”，符合句意。expr