Many parts of the world have four seasons. They are spring, summer, autumn and winter. In spring, the weather becomes warmer and the days get longer. Plants begin to grow and many animals have babies. Summer is the hottest season. Plants grow fast. In autumn, the weather turns cool. Trees may lose their leaves. Some birds fly to warmer places. Winter is the coldest season. Plants stop growing and many trees are bare(光秃秃的).

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Selina: What's your favorite subject, Ken?

Ken: My favorite subject is P.E.？

Selina: Why do you like P.E.?

Ken: Because it's exciting and fun.

Selina: When do you have P.E.?

Ken: On Monday and Thursday.

Selina: What sports can you play? Can you play any balls?

Ken: Oh, yes. I can play soccer, basketball and baseball.

Selina: Wow, you're so great! Do you have a basketball?

Ken: Yes, I have a blue basketball.

Selina: Let's play basketball.

Ken: That sounds great. Let's go.

    Ted is a student. He is my best friend. He is busy at the weekend. He is going to wash his clothes this Saturday morning. He is going to the bookstore this Saturday afternoon. He is going to the gym to play badminton this Sunday morning. He is going to learn Chinese this Sunday afternoon. He is going to play computer games this Sunday evening.

    I often go skilling on the weekend. I am good at skilling, so I can ski very fast. It is fun. Lili often goes rock climbing with her friends. It often feels scary, but it is very safe. Tom often goes for a walk on the beach. He also likes playing Frisbee there with his parents and swim in the sea. I like looking at all the trains.

    What do you like?

Cathy: Mom, look, there are some birds.

Mom: Which bird do you like?

Cathy: I like the green one. It's more beautiful than the blue one.

Mom: Which bird is stronger?

Cathy: The blue one is stronger.

Mom: I like the blue bird. I think it's younger, too.

Cathy: But the green bird's tail is longer.

Mom: Yes, I think it's about 20 cm long.