Nature in action
Say each word aloud. 🌿
- forest (a large area with many trees)
- rain (water that falls from clouds)
- whale (a very large animal that lives in the sea)
- recycle (use materials again)
- pollution (dirty or harmful air, water, or land)
Change the focus
Active sentence | Passive sentence |
|---|---|
People protect forests. | Forests are protected. |
A factory makes paper from trees. | Paper is made from trees. |
Passive pattern: object + is/are + past participle
Say the passive form.
- People protect forests.
- Farmers grow vegetables.
- Scientists study whales.
- People recycle glass.
- Schools collect paper.
- Rangers feed injured birds.
- People use solar energy.
- Volunteers clean beaches.
- Factories produce pollution.
- Students plant trees.
Describe people, animals, and things
Choose the describing word
Connect each noun with the best word to introduce extra information.
Connect each noun with the best describing word
- the ranger
- who
- a scientist
- who
- a whale
- which
- the forest
- that
Build nature descriptions
Read each completed phrase as one sentence.
Connect each noun phrase with the correct description
- the ranger
- who works in the park
- the river
- which is polluted
- birds
- that are protected here
- a recycling bin
- which is used for paper
Make environmental actions passive
Change the active sentence into the present simple passive form.
- People clean the beach every week.
The beach [___] every week.
- A factory makes paper from trees.
Paper [___] from trees.
- Scientists protect endangered animals.
Endangered animals [___] by scientists.
- Volunteers collect plastic bottles.
Plastic bottles [___] by volunteers.
Complete the description
Use a relative word. Animals and things can use which or that; people can use who or that.
- The elephant [___] lives in this zoo is rescued.
- The people [___] protect the forest are volunteers.
Check the grammar choices
Decide if the statement is correct
Select the correct passive form
- Solar energy [___] in many homes.
- Plastic bottles [___] every day.
Look closely at relative clauses
- The whale [___] lives near the coast is endangered.
- The volunteers [___] recycle paper help the environment.
Check the passive pattern again
Ecology mastery check
Key patterns
Meaning | Pattern |
|---|---|
One thing | is + past participle |
More than one thing | are + past participle |
A person | who or that |
An animal or thing | which or that |
Quick check
Say a complete answer.
- Make a passive sentence about paper.
- Complete: “The animal ___ is protected is endangered.”
- Change this sentence: “People recycle bottles.”
- Say one ecology sentence with a passive form, a relative clause, or both.
Connect the grammar idea
Connect each grammar idea with its pattern
- people
- who
- animals and things
- which or that
- a singular passive subject
- is + past participle
- a plural passive subject
- are + past participle


