Lesson 1 (Grammar)

Read the text and choose sentences that contain “if” or “unless”.

There are many types of pollution, and each type can affect people, wildlife, and the environment. This essay will discuss the effects of different kinds of pollution.

Air pollution causes health issues such as coughing, breathing problems, and heart and lung diseases. Nearly seven million people die every year because of air pollution. It also affects animals. If we keep polluting the air, more humans and wildlife will die.

Water pollution affects fish the most. In the USA, about 40% of the rivers and lakes are very polluted. Fish can't live in those rivers and lakes. Unless people stop polluting the water, there won't be any fish left in our rivers.

Land pollution affects trees, wildlife, and people. Trees and plants cannot grow well in polluted soil, so animals lose their homes and cannot find food. Fruit and vegetables can even be dangerous to eat if they grow on polluted land. If people eat this poisoned food, they will get sick.

In conclusion, we need to reduce pollution because it is damaging the environment, causing health problems, and affecting wildlife.

Read the examples and choose the correct answer.

e.g.: If we keep polluting the air, more humans and wildlife will die.

Unless people stop polluting the water, there won't be any fish left in our rivers.

Fruit and vegetables can even be dangerous to eat if they grow on polluted land.

If people eat this poisoned food, they will get sick.

Do we use First Conditional to talk about future situations we thinks are real or will happen?

Choose the correct answer.

e.g.: If we keep polluting the air, more humans and wildlife will die.

Unless people stop polluting the water, there won't be any fish left in our rivers.

Fruit and vegetables can even be dangerous to eat if they grow on polluted land.

If people eat this poisoned food, they will get sick.

How many clauses are there in each sentence?

Put the clauses into the correct columns.

If we keep polluting the air, more humans and wildlife will die.

Fruit and vegetables can even be dangerous to eat if they grow on polluted land.

Complete the structure.

e.g.: If we keep polluting the air, more humans and wildlife will die.

If people eat this poisoned food, they will get sick.

Choose the correct answer. Use the first conditional.

1. If we __________ polluting the air, we __________ the environment.

Choose the correct answer. Use the first conditional.

2. What __________ if we __________ anything to lower pollution?

Choose the correct answer. Use the first conditional.

3. It __________ the wildlife if we __________ the rivers and seas clean.