15
Keeping active
Textbook: p. 22
GoalExplaining what the skeleton and muscles do; talking about an active lifestyle.
New words
skeleton · skeletmuscle · mushakjoint · bo‘g‘improtect · himoya qilmoq
Explanation
The skeleton has three main jobs: to support the body, to protect the important organs and to help the body move. For example, the skull protects the brain and the ribs keep the heart and lungs safe. Bones are joined at joints, and muscles move the bones. About being active: exercise does not need to be hard to be good for you – a walk in the park also helps. Must not (mustn’t) shows that something is not allowed: “You mustn’t run near the swimming pool.” To + verb shows the purpose: “We need bones to stand up.” Muscles that we do not use become weak, so doctors advise young people to be active for about an hour a day.
Worked examples
Our skeleton has more than two hundred bones. The backbone supports us, the skull protects the brain, and the knee joint lets us bend our leg. Muscles pull the bones, so we can run and jump.
— Why do we need muscles? — To move our bones. — Why do we need a skull? — To protect the brain. — Does exercise need to be hard? — No, walking in the park is good too.
Class activity
“Label the skeleton”: write shoulder, elbow, wrist, hip, knee, ankle on a skeleton picture and say what each one does.
Practice
1
Write two jobs of the skeleton.
It supports the body and protects the organs.
2
Answer: What protects the brain?
The skull.
3
Complete with to: We use muscles ... (move).
We use muscles to move.
4
Why is it bad for muscles if we never move?
Muscles we do not use get weaker.