Exercises of Activity Book

Fourth section

Focus on writing

Punctuation: the apostrophe

We use the apostrophe:

• when we write two words as one.

1  Rewrite this paragraph in your notebook. Put the apostrophes where necessary. There are eleven apostrophes.

Our Suns about 5,000 million years old! It heats the Earths atmosphere. But global warming isnt the Suns fault. Its peoples fault because they use machines. And machines emit carbon dioxide. You cant see this gas, but its the main cause of the trouble. And Im afraid things are getting really bad. Scientists study the Earths climate. They say our planets weather is becoming more and more violent.

Our Sun's about 5,000 million years old! It heats the Earth's atmosphere. But global warming isn't the Sun's fault. It's people's fault because they use machines. And machines emit carbon dioxide. You can't see this gas, but it's the main cause of the trouble. And I'm afraid things are getting really bad. Scientists study the Earth's climate. They say our planet's weather is becoming more and more violent.

Spilling

2  Write the correct vowels to complete the words in the dialogue.

Ali: What is the Kids Ecology Club?

Samira: It is a non-profit organisation. It helps young people defend the environment.

Ali: And what do you do?

Samira: We take part in projects about keeping our cities clean, about water conservation and pollution prevention, about global climate change and energy conservation. Why don't you join us?

3  Now, go back to exercise 7 on page 23 of your Student's Book and check your answers.

Students check answers.

Linking words

when

We use when to mark time when we join ideas:

When the temperature goes up, the ice in the Poles melts.

4  Write five sentences in your notebook using when.

Example answers:

When it rains, my father often drives me to school.

When the Sun warms the Earth's atmosphere, the temperature always goes up.

When I leave a room, I never forget to turn off the lights.

When my mother goes to the supermarket, she sometimes takes our used plastic bags.

When my friends go on a picnic, they usually don't reuse their paper cups.

5  Now write five true sentences about yourself in your notebook using when.

Students' own answers

also

Also is a synonym of and, but we use it in a second sentence next to the verb:

Kids Ecology Club takes part in projects about water conservation and pollution. It also participates in energy conservation projects.

6  Reorder the following words to write a paragraph about Sami and his family.

1. use only / Sami / his family/./ and /energy-saving bulbs
2. the lights/when they / leave / They also / . / turn off / the room
3. never / on picnics/, / They like / but / to go / use / . / they / paper cups
4. take / always / real plates/glasses /. / They / and
5. real knives / also / take / forks / and /. / They

Sami and his family use only energy-saving bulbs. They also turn off the lights when they leave the room. They like to go on picnics, but they never use paper cups. They always take real plates and glasses. They also take real knives and forks.