Unit 4 Our WorldUnit 4 Our WorldTopic 1 Plants and animals are Topic 1 Plants and animals are important to us.important to us.

Section BSection B

plant n. plant n. 植物植物 v. v. 种植，播种种植，播种

Learn some new words!

rose n. 玫瑰花

snake n. snake n. 蛇蛇

Learn some new words!

fox n. fox n. 狐狸狐狸(pl.) foxes(pl.) foxesinsect n.insect n. 昆虫昆虫frog n. frog n. 青蛙青蛙

• What’s the snake doing?• It is eating the frog.• It means snakes feed on frogs.

foxfox

snakesnake

frogfrog birdbird

feed on insectinsect

plant

That’s nature. That’s our world.

Draw some arrows ( ) to show their relations.

食物链

Listen to the recording and fill in the blanks.

There are many different kinds of living things in the world. There are animals, plants, insects, etc. Most birds are ________ than most insects. Foxes are ________ than frogs. Snakes are ____________________ of all. Insects feed on plants. Birds and frogs eat insects. Snakes and foxes eat birds or frogs. That’s ________. That’s our world.

If there are no plants or insects in the future, what will our world be like?

biggerstronger

the most dangerous

nature

Discuss with your partner what animals you like best. Then report your result.

Answer the questions: 1. Does Wang Wei like animals?1. Does Wang Wei like animals?2. What does Maria like?2. What does Maria like?

1a Look, listen and say 影片

more interesting the most beautifulbeautiful cutercuter

Match the people with the things they like and give the reasons. And act out the conversation.

• I think roses are the most beautiful of all the flowers.

• I think animals are more interesting.

• 多音节形容词的比较级和最高级• more + adj.

• the most + adj.

Key pointsKey points

• They give us joy.They give us joy.

give sb. joygive sb. joy

Key pointsKey points

• As we knowAs we know, plants and animals , plants and animals are important toare important to us. us.

be important to sb.be important to sb.

众所周知众所周知

Key pointsKey points

share … with … share … with … 与与…………分享……分享……

We We shareshare the world the world withwith ani animals and plants.mals and plants.

• We We shareshare the world the world withwith them. them.

share sth. with sb. share sth. with sb. 我和妹妹共用一个房间。我和妹妹共用一个房间。

I share the room with my sister.I share the room with my sister.

Key pointsKey points

• Which do you like Which do you like betterbetter, , plantsplants oror animalsanimals??

• Which … Which … betterbetter, ______ , ______ oror _______? Which _______? Which … … bestbest, _____, _____ , _____, _____ oror ______? ______?

Key pointsKey points

Read 1a again and practice conversations with Read 1a again and practice conversations with your partner. The following expressions may your partner. The following expressions may help you.help you.

betterbetter , … or … ? , … or … ?

What kind of animal/plant do you likeWhat kind of animal/plant do you like

bestbest, …, … or …?, …, … or …?

Why do you think so ? Why do you think so ?

moremore friendly/useful… friendly/useful…

Because it’s/they’re Because it’s/they’re

the mostthe most beautiful /interesting… beautiful /interesting…

Discuss the following questions about Discuss the following questions about animals and plants in groups, then animals and plants in groups, then

report the results to the class.report the results to the class.• 1. Do you know the importance of 1. Do you know the importance of

plants and animals to us?plants and animals to us?

• 2. What should we do to protect 2. What should we do to protect

plants and animals?plants and animals?

Summary Summary • 1. Talk about plants and animals in nature.1. Talk about plants and animals in nature.• 2. The changing rules and use of comparative and 2. The changing rules and use of comparative and

superlative degrees of polysyllabic adjectives.superlative degrees of polysyllabic adjectives. 多音节形容词的比较级和最高级 more + adj. the most + adj.

• 3. Useful expressions:3. Useful expressions:

Which … Which … betterbetter, ______ , ______ oror _______? _______?

Which … Which … bestbest, _____, _____ , _____, _____ oror ______? ______?

share … with …; give…joyshare … with …; give…joy

feed on; be important tofeed on; be important to

Homework Homework

• How many kinds of animals How many kinds of animals do you know? Write them do you know? Write them down and draw a picture to down and draw a picture to show their relations.show their relations.

Thanks for Thanks for listening! listening!

Goodbye!Goodbye!