Unit1-------------------------------------------------------------

This is the first vacation she has had for a long time.

They plan to stay in the park until around 4 o'clock .

She has heard that the park is very beautiful.

They wanted to stay there, but they couldn't get the reservations.

If you get too close to a fire, you will be burned.

I haven't eaten Indian food for a long time.

Without an atmosphere, there would be no life on Earth.

He went to Europe twice, each time to different countries.

His dream was to work for an international company.

It was established 5 years ago and has been expanding rapidly.

In the last two years, it has opened offices in three new cities.

Its dedication to high quality service has proven to be successful.

Many forest fires are caused by lightning.

Epidemic has killed more people than all wars and nature damages.

Unit2-------------------------------------------------------------

If we don't act, we may go the way of the dinosaurs.

The immune system protects the body against infections and diseases.

Sneezing and fever are examples of how the immune system works.

People see things from different points of view.

?He needs to relax because he has been working too hard.

?Have they found the wreckage yet?

An action that is against the law is an illegal action.

May I see your passport please?

A year later he was arrested for failure to pay taxes.

A receipt shows that something has been paid for.

Interest is what we pay to lenders when we borrow money.

Have they signed the contract yet?

Unit3-------------------------------------------------------------

She works an average of 8 hours a day, which is one third of her day.

If he could reduce his commute time, he would have more time for other things.

Older workers often put a higher value on the balance between life and work.

His first contact with western music was when he was just two years old.

From this experience, he decided he wanted to learn to play the piano.

Two years later he won first place in a piano competition.

When Lang Lang was nine years old, his father quit his job and took him to Beijing.

When they moved to Beijing, they rented a flat in a poor area of the city.

?One afternoon, his teacher told him he had no talent and told him to go home.

For several months he neither played the piano nor spoke to his father.

They are just saying what they think we want to hear.

The number of bees within a colony depends on seasonal changes.

Changes that affect one species may have serious effects on other species.

Many kids dream of becoming famous singers or movie stars.

It's nice to imagine playing a favorite sport and getting paid for it.

Terrorism involves groups of individuals rather than countries.

Nearly every cell in a person's body has the same DNA.