懂你英语level6 unit1 part2 games,speaking

Every 200000 to 300000 years, the earth's magnetic field reverses.

We can also see this magnetic field when we use a compass.

In fact, the earth is like a large bar magnet with a North and south pole.

He doesn't have a car, so he can't drive us to school.

He wishes he had a car, but he doesn't have enough money to buy one.

There's going to be a sale next week. So I hope she doesn't go shopping tomorrow.

You're not a child anymore. So you have responsibilities.

You make things sound as if you have no choices in life.

Living in the city makes things like that really difficult.

Many scientists believe that the earth's magnetic field is due to the earth's rotation.

Electric charge attract or repel each other with a force that depends on the distance between them.

This has happened many times in earth's history, but it has been happening more lately.

I wish we didn't have to run. But if it doesn't hurry, we will miss the next bus.

If that flight leaves on time, the next shuttle bus may not get us to the airport on time.

If the flight left an hour later, we wouldn't have to get to the airport so early tomorrow morning.