Unit 11 our greener world

(A.1 - Pronunciation trang 32) (Trả lời tự luận) Read the sentences aloud.

1. The 3Rs stand for reduce, reuse and recycle.

2. We have to write about the environment.

3. He’s coughing because it is dusty here.

4. They usually cycle to school.

5. You can plant trees and flowers in the garden.

(A.2 - Pronunciation trang 32) (Trả lời tự luận) Read the poem with correct rhythm.

Reduce, reuse, recycle

Recycle, recycle

Reduce, reuse, recycle

It’s simple simple

Just reduce the noise

And reuse old bottles

Recycle broken glass

It’s simple simple

(B.1 - Vocabulary trang 33) (Điền khuyết) Across 1. Dirty [ ___ ] causes breathing problems. 4. Things you throw away because you don’t need them are called [ ___ ]. 7. You can take these bottles to the factory to [ ___ ] them. 8. Please [ ___ ] your envelopes. Down 2. If you [ ___ ] the time for you shower, you will save a lot of water. 3. Loud [ ___ ] can annoy people. 5. You can make flower vases from old [ ___ ]. 6. Fish die when [ ___ ] in lakes, rivers and oceans is dirty.

(B.2 - Vocabulary trang 34) (Nối 2 cột) Read each way for preventing pollution and match it with a suitable picture.

(B.3 - Grammar trang 34) (Điền khuyết chọn từ danh sách) Write a, an or the 1. We have [ ___ ] cat, [ ___ ] dog, and [ ___ ] goldfish. 2. [ ___ ] Earth is the third planet from [ ___ ] Sun. 3. My grandfather is [ ___ ] astronaut and my father is [ ___ ] pilot. 4. Do you live in [ ___ ] house or [ ___ ] flat? 5. Do you have [ ___ ] umbrella in your car?

(B.4 - Grammar trang 35) (Điền khuyết nhập từ bàn phím) Vy: What are you doing, Mi? Mi: I’m writing a paragraph about the ways to save our environment. Vy: Let me see. (Vy reads Mi’s writing.). If you (take) [ ___ ] instead of a bath, you (save) [ ___ ] water. Mi: Can you give me some more ideas? Vy: Sure. If you (cycle) [ ___ ] more, there (be) [ ___ ] less air pollution. Mi: Why? Vy: It’s simple. If you (cycle) [ ___ ], you (6. produce) [ ___ ] fumes. If there (be) [ ___ ] fumes, the air (be) [ ___ ] cleaner. Mi: I see. I have another idea. If people (plant) [ ___ ] more trees, there (be) [ ___ ] floods. Vy: That’s right. (Vy looks at her watch.) Oh, it’s five already. If I (not hurry) [ ___ ], I (be) [ ___ ] late for my English class. Bye, Mi. Mi: Bye, Vy.

(B.5 - Grammar trang 35) (Điền khuyết chọn từ danh sách) Use the words to make a first conditinal sentence. Make necessary changes and add some words. 1. If \ burn rubbish, \ produce harmful smoke. → If you burn rubbish, you [ ___ ]. 2. If \ reuse bottles, \ save a lot of money. → If you reuse bottles, you [ ___ ]. 3. If \ use recycled paper, \ save \ trees. → If you use recycled paper, you [ ___ ]. 4. If \ plant trees in the schoolyard, \ school \ greener place. → If you plant trees, the school [ ___ ]. 5. If \ rubbish bin in every class, \ classroom \ cleaner. → If there is a rubbish bin, the classroom [ ___ ].

(C.1 - Speaking trang 36) (Sắp xếp) Use the given words and phrases below (in picture) to make a conversation between two friends. Make necessary changes and add some words. 1. Mai: [ ___ ], Phong? 2. Phong: [ ___ ]. 3. Mai: [ ___ ]. 4. Phong: Why? 5. Mai: [ ___ ]. 6. Phong: [ ___ ].

(C.2 - Speaking trang 36) (Điền khuyết chọn từ danh sách) Complete the conversation between a girl (Ly) and her younger brother (Vinh). Ly: Vinh, why do you often forget to turn off the light when you go out of the room? Vinh: (1) [ ___ ] Ly: If you forget all the time, we’ll have to pay a lot of money for electricity. Vinh: (2) [ ___ ] Ly: By the way, I think we need to grow some flowers in our garden. Vinh: (3) [ ___ ] Ly: And we can grow some vegetables too. Vinh: (4) [ ___ ] Ly: Now go and tell Mum and Dad about our ideas. Do you know where they are? Vinh: (5) [ ___ ]

(D.1 - Reading trang 37) (Điền khuyết chọn từ danh sách) Look at the two pictures and complete the sentences. Picture 1: p2. A girl is [ ___ ]. p3. Two students are [ ___ ]. p4. The tap is [ ___ ] while a boy is brushing his teeth. p5. A girl is [ ___ ]. Picture 2: p2. A girl is [ ___ ]. p3. Two students are [ ___ ]. p4. The tap is [ ___ ] while a boy is brushing his teeth. p5. A girl is [ ___ ].

(D.1 - Reading trang 37) (Điền khuyết chọn từ danh sách) Choose the correct word to fill each blank. AIR QUALITY People need to breathe. If they don’t breathe, they (1) [ ___ ] die. But how clean is the air people breathe? If they breathe (2) [ ___ ] air, they will have breathing problems and become (3) [ ___ ]. Plants and animals need (4) [ ___ ] air too. A lot of the things (5) [ ___ ] our lives create harmful gases and (6) [ ___ ] the air dirty, like cars, motorbikes and factories. Dirty air is called “(7) [ ___ ] air”. Air pollution can also make our Earth warmer. The problem of air pollution started with the burning (8) [ ___ ] coal in homes and factories.

(D.2a - Reading trang 38) (Nối 2 cột) Read the passage and do the exercises. Match the words in A with their meanings in B

(D.2b - Reading trang 38) (Điền khuyết chọn từ danh sách) The passage has three paragraphs 1 - 3. Match them with the correct headings.

(D.2c - Reading trang 38) (Sắp xếp) Reorder the pictures to show recycling process

(E.1 - Writing trang 39) (Trả lời tự luận) Make sentences using the words and phrases below to help you

1. Pack \ lunch \ lunch box \ instead \ plastic bag.

→

2. Use \ own bag \ when \ go shopping.

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3. Turn off \ light \ when \ not use.

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4. Donate \ old clothes \ or \ exchange \ friends.

→

5. Turn off \ tap\ when \ brush \ teeth.

→

(E.2 - Writing trang 39) (Trả lời tự luận) Complete the network with ideas to make your classroom a greener one. the first one has been done as an example.

(E.3 - Writing trang 39) (Trả lời tự luận) You and your friends in class want to make your classroom a greener place. Write a paragraph to tell what you can do. Use the your ideas.