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1、,Review,1. Tigers _ _ (以.为食) the meat. 2. _ _ _(众所周知), dogs are our friends. 3. 他和好朋友一起分享这个美味的蛋糕。 He _ the delicious cake _ his good friends. 4. Dont _ _(玩耍) the fire. 5. There are five _(goose) and two _ (fox) on the farm.,Practice,feed on,As we know,shared with,play with,geese,foxes,Unit 4 Our wor
2、ld Topic 1 Plants and animals are important to us. Section C,rainforest 雨林 forest 森林,/ reinf:rst/,/f:rst/,What are in the rainforest?,Learn the new words,earth n. 地球，泥土，大地,/:/,surface 表面,/ s:fs/,wood n. 木头，木材；woods 树木，森林,rubber n.橡胶,/ rb/,/ wud/,sea n. 海洋 ocean n. 海洋,/si:/,/ n/,/ drp/,drop n.滴 v. 掉下
3、,lake n.湖泊,/ leik/,Pre-reading questions,What do you think of the rainforest?,2. Rainforests are important to us, arent they?,Listen and mark true (T) or False (F) according to 1a.,( ) 1. Rainforests cover half of the earths surface. ( ) 2. We can see everything clearly in rainforests. ( ) 3. Rainfo
4、rests can give us many useful things. ( ) 4. In rainforests all the animals live on the ground. ( ) 5. Without rainforests, the environment would become quite terrible.,F,F,T,F,T,/ kv/,Read 1a and finish the exercises,( )1. What does “cover” mean in this passage? A. set up B. spread over C. have D.
5、form ( ) 2. We cant get the answer to Question _ from the passage. A. What are in rainforests? B. Why are rainforests important to us? C. What can we get from rainforests? D. What should we do to protect rainforests?,B,D,/prtekt/ v. 保护,3. Why are rainforests “the lung of the earth”? 4. Whats the mai
6、n idea of the passage?,A.The plants in the forests help to make the air fresher. B.They also help to control the climate. C. They give us woods, rubber, fruit ,medicine and so on. D. Both A and B.,A.We should protect the rainforests. B. There are many animals in the rainforests. C. There are lots of
7、 plants in the rainforests. D. Rainforests are becoming smaller and smaller.,/mein/,D,A,Thousands and thousands of animals live in rainforests.,成千上万的,成百上千的 成百万上千万的，数以百万计的,hundreds of,millions of,Key points,_ visitors come to the Great Wall every year. Five thousands of B. Thousands of C. Thousand of
8、,B,But now rainforests are becoming smaller and smaller.,越来越小,“形容词比较级+and+形容词比较级” 或“more and more + 多音节形容词原级”,The weather gets_.,中国越来越美丽。,China is_.,Key points,e.g.天气变得越来越暖和了。,warmer and warmer,more and more beautiful,Rainforests cover 6% of the earths surface.,rainforests 6%,the earths surface,Rain
9、forests,cover n. 盖子、封面 v. 覆盖 cover with 遮盖 be covered with 被.所覆盖,The plants in the forests help to make the air fresher.,Rainforests,Rainforests can help to control the climate.,/kntrl/,The rainforests can give us wood, rubber, fruit, medicine and so on.,Rainforests,make the air fresher control the
10、climate give us woods, rubber, fruit, medicine and so on,1 C Pair Work,The importance of rainforests,feed, fresh, rubber, small, on, control, meat There are a lot of trees around us. The trees can help to make the air _and cleaner. They can also help to _ the weather. They provide (提供) humans with f
11、ood, _, medicine and other things. Because of the trees, many animals can live _ the earth. But people often cut trees down in large numbers. The forests are becoming much _than before, so we should protect them well.,用所给词的适当形式填空，其中有两项多余。,control,rubber,on,smaller,fasher,Look and say,What covers mos
12、t parts of the earth? Water. Its in rivers, lakes, seas and oceans.,Answer the question:,2b Complete the passage according to 2a.,Water is _ to all living things. All _ and _ need water. _ also need water to drink, to cook and _ _. _ water, there could be no life on earth. So we must save water.,imp
13、ortant,plants,animals,Humans,to,clean,Without,In fact, water makes up the largest part of the human body.,1. In fact 实际上， 事实上 2. make up 组成， 构成，占 3. large -larger -largest 4. part of 的部分 most part of 绝大部分,Key points,Water covers most parts of the earth.,Language Points,In fact, water makes up the la
14、rgest part of the human body.,1. In fact 实际上， 事实上 2. make up 组成， 构成，占 3. large -larger -largest 4. part of 的部分 most part of 绝大部分,3 Number the following sentences.,Spring is warm. Its the best season to plant a tree. ( ) Put the tree in the hole and keep it straight. ( ) Fill the hole with earth and
15、make the earth hard with your feet. ( ) Dig a hole in the earth and make sure the hole is deep enough for a tree. ( ) Water the tree. If everything is ok, the tree will grow new leaves a few days later.,1,2,3,4,Retell how to plant trees according to the pictures.,Task,1. You should drink _ _(大量) boi
16、led water. 2. Water _ _ _(必需) all living things. 3. Water covers _ _ _(绝大部分)the earth. 4. Water _ _ (构成)the largest part of the human body.,Practice,plenty of,is necessary for,most part of,makes up,Discuss what we should do to keep the water clean? 2. Finish 3 “Work alone”. 3. Read 1a and 2a.,Homework,Thanks for listening! Goodbye!,/:/、/:/、/ :/、/i:/、/U:/、 /、/ /、/、/、/、/、 /e/、/、/e/、/a/ 、/、 /、/e/、/、/、/a/ t ,