英语九年级全册Section B课文配套课件ppt

这是一份英语九年级全册Section B课文配套课件ppt，共21页。PPT课件主要包含了  dislike，  unusual，  impolite，  illegal，dis- ，un- ，im- ，imbalance等内容，欢迎下载使用。

dis-,un-,im-引导的否定前缀
Guessing the meanings
1.Bb 's parents died in a car accident, and he is unhappy and very lnely.
2.Lucy wanted t help disabled children.
adj.丧失能力的，有残疾的
  irregular
  inexpensive
否定前缀
在单词的词首加上一个表示相反含义的词缀。
“非”、“无”、“不”、“未”等。
il-,in-,ir-;
1. disadvantage disagreement
2. dislike disagree disappear
3. dishnest dishnrable
1. unhappy unusual unimprtant uncmfrtable uncmmn
2. unhappiness
3. unlck unfld undress
4. unexpected unfinished unmarried
impssible implite
用单词的适当形式填空。
4. Jim______________(like) English, because he thinks it's difficult t learn well.
2._________________(luckily), he failed his final exam.
3. It's__________________(pssible) fr the little by t carry such a heavy bx.
1. It's ________________(plite) t stare at a girl.
否定前缀：dis- im- un-
定义：在单词的词首加上一个表示相反含义的词缀。
表示“非”、“无”、“不”、“未”等。
前缀一般改变单词的意义，但不改变词性。
动词的语态----被动语态
考点一：动词语态分为？
动词的语态分为主动语态和被动语态。 eg: I break the windw.(主动语态) 主动语态的主语是动作的执行者。 The windw is brken by me.（被动语态）被动语态的主语是动词的承受着。
考点二：主动语态变被动语态
1、主动语态变被动语态的方法：主变宾（作宾语），前加by宾变主(做主语)动变被（be+V过去分词）2、被动语态的句子结构：主语+be+动词的过去分词+(by)+宾格---
We speak English every day.English is spken by us every day.
切记：be随时态、主语而变化
一般现在时的被动语态结构
一般过去时的被动语态结构
一般将来时的被动语态结构
现在进行时的被动语态结构
现在完成时的被动语态结构
含情态动词的被动语态结构
把以下句子改为被动语态：1.Mike brke the windw yesterday evening. 2.We may put the flwers in the classrm.3. Mre and mre peple can speak Chinese in western cunttries4.She breaks the blue writer wrte the stry in the will build a schl in that village.7.I have turned ff the TV must read the bk in , the students are planting trees .