试讲初中英语条件状语从句课件.ppt
条件状语从句条件状语从句“主将从现主将从现”11，if意为意为“如果如果”什么是：什么是：主主将将从从现？现？2，主句主句是一般将来时，是一般将来时，从句从句要用一般现在时要用一般现在时3，分清，分清！从句：由从句：由if引导的句子引导的句子2条件状语从句条件状语从句主主将将从从现现If 引导：引导：从句从句-现在时，主句：现在时，主句：Unless引导：引导：=if not1，将来时，将来时（重点！）（重点！）2，祈使句、情态动词，祈使句、情态动词3，现在时，现在时（特殊情况）（特殊情况）3If sentences If sb does sth,sb will do sth =sb will do sth if sb does sth 主句（将来时）主句（将来时）从句（一般现在时）从句（一般现在时）1，if从句从句-一般现在时，主句一般现在时，主句-将来时将来时（重点！）（重点！）4If the telephone rings,I will answer it.If you get up late,you will be late for school.Look and say5If you feel hungry,you should eat something.If you feel tired,please have a rest.6If sentencesIf sb does sth,please do sthIf sb does sth,sb may/must(情态动词情态动词)do sth主句（情态动词主句（情态动词+do）从句（一般现在时）从句（一般现在时）2，if从句从句-一般现在时，主句一般现在时，主句-祈使句或情态动词祈使句或情态动词主句（祈使句）主句（祈使句）从句（一般现在时）从句（一般现在时）7If sentences If sb does sth,sb/sth does sth =sb/sth does sth,if sb does sth主句（一般现在时）主句（一般现在时）从句（一般现在时）从句（一般现在时）3，if从句从句-一般现在时，主句一般现在时，主句-一般现在时（客观事实）一般现在时（客观事实）主语的行为将导致某种主语的行为将导致某种必然发生的结果必然发生的结果时时81.Take a fish out of water,die2.Heat metal,meltIf you heat metal,it meltsIf you take a fish out of water,it dies.Examples9小结小结1If 引导：引导：从句从句-现在时，主句：现在时，主句：1，将来时，将来时（重点！）（重点！）2，祈使句、情态动词，祈使句、情态动词3，现在时，现在时（特殊情况）（特殊情况）总结：总结：if条件状语从句考的频率比较高，考点有条件状语从句考的频率比较高，考点有3：1，if从句的时态从句的时态2，if 表示表示“如果如果”和和“是否是否”时态的区分时态的区分3，连词的选择（连词的选择（if，unless，when.）10 1.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 for 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11 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 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12条件状语从句只有条件状语从句只有if引导一种吗？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 very hungry.(2009内江中考)A.when B.unless C.if13Unless sentence从句从句一般现在时，主句一般现在时，主句将来时将来时但是：与if意思相反！“除非”sb will do sth unless sb does sth if sb does not do sthEg:You will be late for school you now.You will be late for school you now.unlessleavedont leaveif14 1.Well go for a picnic unless it _ this Sunday.【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15 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中考题型条件状语从句16总结：总结：条件状语从句条件状语从句主主将将从从现现If 引导：引导：从句从句-现在时，主句：现在时，主句：Unless引导：引导：=if not1，将来时，将来时（重点！）（重点！）2，祈使句、情态动词，祈使句、情态动词3，现在时，现在时（特殊情况）（特殊情况）17课后练习课后练习：（练习全部理解，说明你掌握了今天的重要内容啦！）（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 1819
