高中三年级英语上册第一课时课件.ppt

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1、GrammarWhat will I do if it is sunny this weekend?Part1:If 的用法 1.I want to know if he will go to park with us.2. We will have a picnic if it doesnt rain.3. If you boil water, it becomes steam. 4. If you feel tired must .宾语从句宾语从句条件状语从句条件状语从句语法语法1：if作为宾语从句作为宾语从句的引导词，引导宾语从的引导词，引导宾语从句。（是否）句。（是否）语法语法2：if

2、（如果）引（如果）引导的条件状语从句导的条件状语从句 if 用于宾语从句中用于宾语从句中原句式原句式引导词引导词从句语序从句语序一般一般疑问句疑问句whether/if改为陈述句改为陈述句 语序语序由从属连词由从属连词whether, if 引导的宾语从句引导的宾语从句e.g. 1. I want to know _. （他是否跟我们一起去公园）他是否跟我们一起去公园）2. Ask him _. （他是否能来）他是否能来）3. I didnt know _.（是否要下雨）是否要下雨） if (whether) he will go to the park with us whether (if

3、) he can come whether it was going to rain or not当句末为当句末为or not时，引导词只能用时，引导词只能用whether而不能用而不能用if.If 与whether 的区别1. I dont know _ he will come or not.2. I dont care of _ he is handsome.3. He wondered _ to stay here the next week.4. _ he will come is not decided. 与与or not 连用只能用连用只能用whether介词后只能用介词后只能用

4、whether与与to do 不定式连用只能用不定式连用只能用whether作主语只能用作主语只能用whetherIf 引导条件状语从句引导条件状语从句 If it is sunny this weekend, what will you do ?If it is sunny this weekend, I _ football with my classmates.If it is sunny this weekend, I_. will playIf it is sunny this weekend, what wont you do ?If it is sunny this weeken

5、d, I _.If it is sunny this weekend, I _.Wont stay at home wont watch television If you have a picnic at weekends,what will you buy? If_,_.If dog bites you, what should you do?Ask for help from teachers / parents / friends.wash the wound call for helptake medicinesee the doctorIf a dog bites you, fir

6、st, you should_.Then, you should_.Next, you should_. And you shouldStay cool if 条件句不一般条件句不一般, 几个要点记心间几个要点记心间; 条件句条件句,放在前放在前, 逗号要放句中间。逗号要放句中间。 条件句表可能，条件句表可能， 主将从现不一般；主将从现不一般； 条件句表事实，条件句表事实， 主句常用现在时主句常用现在时 If还有还有“是否是否”意意 , 宾语从句放后边宾语从句放后边summary分析试题特点及做题思路：分析试题特点及做题思路：考连词考连词- 做题思路做题思路 考时态考时态-做题思路：做题思路：

7、 分析句子分析句子- 判断关系判断关系- 选择正确的选择正确的if的用法的用法认字认字- 判断语境提供的时态特点判断语境提供的时态特点- 选择正选择正确的时态确的时态1.Im sure if he _(go) to the party, he_ (have) a great time.2.If the rain _(stop) tonight, we will go to the cinema.3.Ill buy a computer if I _(have) enough money.4.You _(not get) nervous if you _(do ) enough exercise.5.I want to know if he _(come) tomorrow, if he _(come), I _(give) the massage to him. goes will have stopshave wont getdo comes will come will giveExercise:Part2:Unless的用法 首字母填空（连词）做题思路首字母填空（连词）做题思路：1. 找出关键词汇找出关键词汇2.判断主从句的关系判断主从句的关系3.选择正确的连词选择正确的连词Homework: 1.复习连词的用法 2.做卷子上剩余的练习