1、课题】：Lesson13 Why Are Plants Important【课型】：New【课前预习】教学目标： 一熟读并掌握本课的四会单词 air pleasant among shade energy die heat bamboo kilogram二掌握以下短语英汉互译1.我们需要它们的原因 2. 做是令人愉快的3.帮助净化空气 4. 在阴凉处5. 在树上 6. 把搬走7.把制成 8. 许多9. 十八公斤的竹子 10. 这个问题的三个答案三朗读课文，理解下列重点句子，并把他们译成汉语 1. Trees help clean the air.2. Its pleasant to walk
2、among the trees.3. Lets talk about trees and the reason why we need them.4.We make books from trees.5. Then we can sit under a tree in the shade.6. I need food to live.7. All plants take energy from the sun and make it into food.四知识点预习1. Trees help clean the air. Its pleasant to walk among the trees
3、.树有助于净化空气，走在树丛中很惬意。（1）pleasant和pleased作形容词均表示令人中意和愉快的意思，pleasant指使人觉得好玩、有趣、舒服；而pleased只用于人不用于物，指某人满足了自己的愿望而感到高兴，一般只做表语。例如：I am very pleased youve decided to come.你决定来我很高兴。 （2）among一般指“在三者或在三者以上之中”;between指“在两者之中”例如She is sitting Jane and Mary. She is sitting the children.2. Donuts dont grow on trees
4、.面包圈不长在树上。on trees意思是在树上，亦可表达为on the tree,指的是树上本身的东西，即长在树上;而in the tree也表示在树上，但它所指的是外来的东西，不是树本身的东西。例如：There are some birds in the tree. 树上有几只鸟。There are many apples on the tree. 树上有很多苹果。3.Then we can sit under a tree in the shade. 那时我们可以坐在树底下的阴凉里。in the shade是介词短语，“在阴凉处”类似词组有：in the sun在阳光下 in the l
5、ight 在灯光下4. All plants take energy from the sun and make it into food.所有的植物都从太阳那里得到能量，然后把它转化为食物。makeinto 把。制成。 We can make the tree into paper.be made from/of be made by be made in 5.Without food,they would have nothing to eat and they would die.如果没有食物，他们就会因为没有东西吃而死去。without是介词，“没有”的意思。 He went to s
6、chool without breakfast.他没有吃早饭就去上学了。 He left without saying goodbye.他没有说再见就走了。【练案】 1. The doctor can save _ people. A. die B. dead C. dying D. death2. Nothing_ difficult if you put it into heart. A. is B. are C. am D. have3. That is a _ trip and all the people are_ . A. pleased, pleasant B. pleasant
7、, pleased C. please, pleased D. pleased, please4. The teacher stands_ the students. A. between B. among C. up D. to5. Find the answer _ this question. A. of B. to C. in D. at6. Are there a lot of_ where you live? A. apples tree B. apples trees C. apple trees D. apple tree7.We can make chairs_ trees.
8、 A. from B. with C. for D. at8.The heavy rain can _ the soil_. A. carry, from B. carry, away C. carry, at D. carry, of9. I have nothing_ . A. say B. says C. to say D. saying10. Why_ plants important? A. is B. are C. do D. does三连词成句 1. food need to I live . 2. that knows everyone . 3. would would eat die they they food nothing without have to and .
