八年级英语上册 Unit4 Wild Animals Grammar教学案（无答案） 牛津版.doc

八年级英语上册 unit4 wild animals grammar教学案（无答案） 牛津版学习目标1学习并掌握if引导的条件状语从句。2学习并掌握because和because of的区别和用法。学习重难点if引导的条件状语从句的时态用法一、课前预习。1练一练：填入动词的正确形式(1)if hunters catch a giant panda, they_(kill)it for its fur.(2)if farmers cut down trees and forests, giant pandas _(have) nowhere to live.(3)if people find baby pandas alone ,they _(take) them away.(4)if giant pandas are in d anger ,what _we_(do)?你可以再举二个类似的例子吗？（在60页找）_观察、发现：同学们，做完上面的题目后，你发现什么了吗？_二、教学过程step 1 revision.revise giant pandas by asking some questions: step2 presentation. 1. explain the rules of the conditional sentences.2. ask ss. to answer the above question with conditional sentences.3. present ss the use of “because” and “because of”step 3 practiceask ss to finish the exercises.（一）新课导学/课堂精讲：part a：1. 呈现课本p64页a部分的练习，与学生开展讨论并朗读。2鼓励学生造出更多类似的句子。总结：连接词： if意为“_” 可用来引导_状语从句。此从句既可以位于主句_，也可位于主句_。位于主句之前时，常用一个_与主句隔开。e.g. if you are not careful, the knife will hurt you.= _.时态：当谈论将来可能出现的情况时，主句用一般将来时，从句常用_。e.g. (1) 如果他明天不来，我们将不知道该怎么办。if he _ _ tomorrow, we _ _ _ to do next.(2) 如果我不去，你就得一个人去。if i _ go there, you _ _ there by yourself.part b1.师生free talk :do you know why so many animals die ?because_some wild animals may die because of _ i didnt go to the zoo _ i wanted to see wild animals there. 因为我想看野生动物。i didnt take any food for animals _we mustnt feed the animals in the zoo.因为我们不能喂野生动物。小结：because后面经常接_所有的人们在欢呼，因为那个精彩的表演。all the people are cheered _the wonderful show .很多人知道这个表演，因为电视上的广告。lots of people know about the show _the advertisement on tv. because of表示“因为，由于的缘故”，后面跟 _ （二）课堂练习/课堂精练：用所给词的适当形式填空。1. if tigers live in the wild, they _( hunt) for food on their own.2. if the traffic lights _ ( turn) green, you can go across the road.3. we _( not have) our sports games if the weather _( not be) fine.4. if we dont help the wild animals in _( dangerous). they _( die) soon.5. if there _ (be) fewer trees, there _ (be) more pollution.6. i _ (go) to the beach if it_ (not rain) this week.单选题。( )1. _ you eat bad food, you may be ill. a. before b. until c. if d. which( )2. i wont go to the meeting if it_ tomorrow. a. will rain b. rains c. rained d. rain（ ）3. if you _ to the party, youll have a great time. a. will go b. went c. go d. going（ ）4 i _ her the answer if she _me. a. can tell, will ask b. will tell, will ask c. would tell, ask d. will tell, asks（ ）5 what will you do if you _ to the old folks home visit?a. go b. went c. going d. will go用because或because of 填空1. i didnt go to school yesterday _i was ill.2. we wont go to the park_ the heavy rain.3. ricky worked so hard _he wanted the show to be a success.4. he came to school so late just _the terrible weather.5. _there was a lot of homework to do, i was very busy.三、课后巩固翻译句子。1.如果他到的晚了会发生什么事情？what _ if he _ late?2. 如果努力学习，你就会取得好成绩。if you_ _, you _ good _.3. 他如果看电视太久了，他的父母会不高兴。 if he _ tv too much, his parents _ _unhappy.4. 如果我们为他组织生日聚会，大家都会来的。everyone _ if we _a birthday party _ him.5. 如果明天不下雨，我会和你一起去公园的。 if it _tomorrow, i _ go to the park _you.6. 你如果抄同学的作业就不能学好各门功课。you _ _ good at all the subjects if you _ the other students homework.根据首字母完成短文。blue whales are the biggest animals in the sea. they can be as l_ as 30 metres and can w_ as much as 1,000 kilos. they are much larger than the dinosaurs were. they can s_to each other even though we dont know what they are saying. blue whales are part of the family of mammals（哺乳动物）. this m_ that they are not fish but animals that h_ babies as cows and cats do. they give their babies milk. sadly, there are not many whales l_ now because people hav