1、班级 小组 姓名 层次 Unit 4 Cyberspace 导学案 7 Grammar 编写人：梁玲玲 审稿：高一英语组寄语：There is no end to learning. 学无止境。 Learning aims: grasp the first conditional and the second conditional Learning important point: understand the difference between the first conditional and the second conditional Learning difficult poin
2、t : learn to use the second conditional Learning steps :Step 1. 翻译下面的句子，然后思考总结：(1) If our teacher agrees , well talk about the topic . (2) 如果明天天气好， 你要做什么？ (3) If people dont stop polluting the air , animals and plants will soon die . (4) 如果你太累，你可以休息一下。 （5）If you have time , we can go for a walk this
3、 evening . (6) If you feel sleepy , go to bed . (7) 如果她来，请给我打电话。 以上的句子是if 引导的真实条件句（8）If I were you , I would help the poor . (9) If I could fly , I could live on the moon . (10) If he had get up earlier , I would have caught the early bus . 这些句子表示将来不可能发生或与事实相反的情况或状态，我们把这种if 引导的条件句叫虚拟条件句。Step 2. 虚拟条件
4、句的构成：（1） 与现在事实相反条件句： 一般过去时 （be 一般用were ）主句： would ( should , could , might ) + 动词原形If I knew his address, I could write a letter to him . (2) 与过去事实相反条件句： 过去完成时 （构成： + ）主句： would ( should , could , might ) +have + 动词的过去分词If you had worked harder , you would have gotten high grades in this exam . (3)
5、与将来事实相反 动词过去式 would （should条件句： should +动词原形 主句： might , could ） were to + 动词原形 + 动词原形If it rained this afternoon , the football match would be put off . 注意：（1）在虚拟语气的从句中，动词be的过去时态一律用were，不用was， 即在从句中be用were代替。If I were you, I would go to look for him. 如果我是你，就会去找他。 If he were here, everything would b
6、e all right. 如果他在这儿，一切都会好的。（2）在虚拟条件状语中如果有were, should, had这三个词，通常将if省略，主语提前, 变成 were, should, had +主语的形式。但要注意，在虚拟条件状语从句中，省略连词的倒装形式的句首不能用动词的缩略形式。如我们可说 Were I not to do., 而不能说 Werent I to do. Were they here now, they could help us. = Had you come earlier, you would have met him = Should it rain, the c
7、rops would be saved. = Step two:当堂检测：一、选择题（1）-Ithoughtyouwouldcomebacktomorrow.（2） -IwouldifI_toattendameeting.A.donthave B.didnthaveC.willnothave D.would（3）IfI_you,Iwouldntreturnthecall. A.beB.amC.wasD.were（4）_today,hewouldgettherebyFriday.A.WouldheleaveB.WasheleavingC.WerehetoleaveD.Ifheleave二、用所给
8、动词的适当形式填空(1) If they (eat) less, they wouldnt be so fat .（2） If you walk ten miles , you (feel) tired .(3) We would take you to the concert if we (have) another ticket .(4) I wont go out if it (not stop) raining .(5) If it were cheaper , I (go) on holiday to Paris.(6) I would phone her if I (know) her telephone number.(7) She could help you if you (ask) her . 小结： If引导的虚拟条件句的构成 主句从句与现在事实相反 与过去事实相反与将来事实相反学后反思： .精品资料。欢迎使用。高考资源网w。w-w*k&s%5￥u高考资源网w。w-w*k&s%5￥u
