第一课时 Vocabulary 词汇
基础作业
1.根据中文或第一个字母完成句子
1-10 convenient, example, imagine, major, furniture, disease, fight, branches, oxygen, discuss
2.按要求写出单词的正确形式
1-10 discusses, harmful, for, branches, gases, convenient, fought, carried, digging, contain
拓展作业
3.用正确的单词完成句子
1-10 oxygen, against, major, produces, convenient, dug, discuss, harmful, imagine, hole
11-21 gases, carried, example, millions, root, furniture, branches, condition, disease, fought, save
第二课时 基础作业
1.单词意思配对
1-10 GJABI   CDFEH
2.完成句子
1.to fight against,  2.is harmful to  3. can't imagine working  4. stop doing, without trees  5.home to thousands of
拓展作业
3.阅读理解 
1.They usually plant new trees.
2.The oak tree
3.Wood and the trunk
4.Deciduous (shedding) trees and conifers (evergreen)
5.When the roots and leaves of a tree are fully grown, the tree can then produce its own food and also provide oxygen (air) into the atmosphere through a process called photosynthesis.
6.The age of the tree
第三课时 语法 Grammar
基础作业
1.用所给单词的正确形式填空。
1-5 are playing , is sleeping, are having, am using, is lying
2.按要求完成下列句子
1.Lily isn't studying English these years
2.Are the children playing football?
3.What is Laura doing?
4.Where is your mother shopping?
5.Miss Wang is having a meeting at the moment.
拓展作业
3.他们在做什么？把编号填入句子前。
a-h 5  12  16  17  19  11 24  9
第四课时 Writing
基础作业
1.Translation 短语翻译题。
1-12 be important to , be good for,  be harmful to , be in danger ,  provide .….with.….  cut down,  die out,  absorb/take in harmful gases , fresh air,   living environment,  do one's best to do sth,  as a result
2.句子翻译题。
1.Trees provide us with many things. For example, coffee, rubber and paper all come from trees.
2.The numbers of many animals are decreasing.
3.Because of environmental pollution, the living environment of animals isgetting worse and worse.
4.We can plant more trees, which can take in harmful gases and give out oxygen.
5.Trees can produce oxygen and provide people with food.
6.People cut down a lot of trees, so there are fewer and fewer trees
7.We must stop polluting the earth before it is too late
8.We should do our best to protect the earth, which is the home to human beings and all animals and plants.
3.梅和好朋友珍所在的格林中学一直很重视对学生进行环保教育。他们开办了一些俱乐部，专门吸纳对环保感兴趣的同学。这不，梅和珍正在谈论各自最喜欢的俱乐部和她们的一些想法。请根据表格内容，写一篇文章。
May and Jane come from Green Middle School. They are talking about their favourite clubs.
May's favourite club is Saving Trees Club, because she thinks trees are important to humans. But now trees are becoming fewer and fewer. So we should try to save them. For example, we should save paper and plant more trees. And Jane's favourite club is Helping Animals Club. She thinks animals are our friends. But they are in danger now. So we should protect them. We should not eat too much meat.
Saving trees and animals means saving us. Just do it now.
拓展作业
4.翻译下列句子。
1.Millions of trees are cut down every year to make furniture.
2.We should do our best to save water in our daily life.
3.They are discussing how to fight against air pollution.
4.It's convenient for us to talk on WeChat.
5.We can't imagine living in a world without oxygen.
5. Writing 写作
梧桐山（Wutong Mountain)之所以被称为深圳的“市肺”，是因为这里有茂盛的植被，空气也是深圳极为清新的。因此，保护梧桐山的村木，文明游览梧桐山是每位游客应尽的责任和义务。请你根据下面的内容，为梧桐山写一篇游览细则。（80词左右）
Wutong Mountain is famous for its clean air. A lot of people visit it every day. There are a lot of trees in the mountain. We must protect them. We shouldn't cut the trees down or write on them. When we are climbing Wutong Mountain,we shouldn't take the fire or set a fire in the mountain. If we find a fire in the mountain, we should call the police at once. It is our duty to protect the trees in the mountain.
第五课时 跨学科延伸学习
基础作业
1.完形填空 1-10 BDBCA   DBADB
2.阅读理解  1-5 ACADB 
拓展作业 略