试讲初中英语条件状语从句课件.ppt

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1、1,条件状语从句“主将从现”,2,1，if意为“如果”,什么是：主将从现？,2，主句是一般将来时，从句要用一般现在时,3，分清！从句：由if引导的句子,3,条件状语从句主将从现,If 引导：从句-现在时，主句：,Unless引导：=if not,1，将来时（重点！）,2，祈使句、情态动词,3，现在时（特殊情况）,4,If sentences,If sb does sth, sb will do sth = sb will do sth if sb does sth,主句（将来时）,从句（一般现在时）,1，if从句-一般现在时，主句-将来时（重点！）,5,If the telephone rin

2、gs, I will answer it.,If you get up late, you will be late for school.,Look and say,6,If you feel hungry, you should eat something.,If you feel tired, please have a rest.,7,If sentences,If sb does sth, please do sthIf sb does sth, sb may/must(情态动词) do sth,主句（情态动词+do）,从句（一般现在时）,2，if从句-一般现在时，主句-祈使句或情态

3、动词,主句（祈使句）,从句（一般现在时）,8,If sentences,If sb does sth, sb/sth does sth = sb/sth does sth, if sb does sth,主句（一般现在时）,从句（一般现在时）,3，if从句-一般现在时，主句-一般现在时（客观事实）,主语的行为将导致某种必然发生的结果时,9,1.Take a fish out of water, die2.Heat metal, melt,If you heat metal, it melts,If you take a fish out of water, it dies.,Examples,

4、10,小结1If 引导：,从句-现在时，主句：,1，将来时（重点！）,2，祈使句、情态动词,3，现在时（特殊情况）,总结： if条件状语从句考的频率比较高，考点有3：1，if从句的时态2，if 表示“如果”和“是否”时态的区分3， 连词的选择（if，unless，when.）,11,If there no buying and selling of animals, there ( ) no killing in nature. 【2011陕西】 A. is; will he B. will be; will be C. is; is D. will be; is2. We will go f

5、or a picnic if it_tomorrow. 【2012浙江衢州】 A. doesnt rain B. wasnt rainy C. wont rain D. wasnt raining,中考题型,条件状语从句,12,3. I dont know if she to my birthday party tomorrow. If she , Ill be very happy. 【2011湖南益阳】A. comes; comes B. will come; comes C. comes; will come4. If you _ him tomorrow, please ask him

6、 if he _ to work on the farm with us.A. see ; goes B. will see; goes C. will see; will go D. see; will go,中考题型,条件状语从句,如果,是否,13,条件状语从句只有if引导一种吗？,比较： 1，In summer , food goes bad easily, _ it is put in the refrigerator. （2010山西中考） A. until B. if C. unless,2， I dont like bread. I wont eat it, _ I am ver

7、y hungry. (2009内江中考) A. when B. unless C. if,14,Unless sentence,从句一般现在时，主句将来时但是：与if意思相反！“除非” sb will do sth unless sb does sth,if sb does not do sth,Eg: You will be late for school you now. You will be late for school you now.,unless,leave,dont leave,if,15,1. Well go for a picnic unless it _ this Su

8、nday .【2012福建福州】 Wish you a lovely weekend. A. rains B. doesnt rain C. wont rain 2. You cant watch TV _ you finish your homework. 【2011内蒙古包头】 A. unless B. if C. while D. as,中考题型,条件状语从句,16,3. Susan will not arrive at the airport on time, _ she hurries up. (2008河北中考) A. once B. if C. when D. unless,中考

9、题型,条件状语从句,17,总结：条件状语从句主将从现,If 引导：从句-现在时，主句：,Unless引导：=if not,1，将来时（重点！）,2，祈使句、情态动词,3，现在时（特殊情况）,18,课后练习：（练习全部理解，说明你掌握了今天的重要内容啦！）,1,We will play basketball, _ tomorrow.如果明天不下雨，我们将打篮球。除非明天下雨，我们将打篮球。2，Tommy, do you know if Frank _ to the zoo this Sunday if it _? Sorry, I have no idea. (2009孝感中考) A. will go; is fine B. goes; is fine C. will go; is going to be fine D. goes; will be fine,19,See you !,