外部骨骼很堅硬，但內(nèi)部骨骼卻很柔軟 。
9. make blood 制造血液
10. carry sth. through sp.把某物輸送到某處
Blood carries nutrients through our bodies.
血液將營養(yǎng)物質(zhì)輸送到我們的全身 。
11. move sth. away 把某物移走
It also help move waste materials away so our bodies can stay healthy.
它（血液）也可以把無用的物質(zhì)移走，所以我們的身體就可以保持健康 。
12. Calcium makes our bones solid, so we need to get enough of it each day.
因為鈣讓我們的骨骼堅固，所以我們每天需要獲取充足的鈣 。
13. Although we get vitamin D from food like fish and eggs, we can also get it from the sun.雖然我們可以從象魚和雞蛋這樣的食物中獲取維生素D，但我們也可以從陽光中獲取它 。
14. Try to get a bit of sun every day so you can have healthier bones!
試著每天曬點太陽你就會擁有健康的骨骼 。
15. make…a habit 養(yǎng)成…..的習(xí)慣 16. daily activities 日?；顒?br /> 17. climb stairs 爬樓梯
18. 構(gòu)詞：反義詞
hard—soft; inside—outside; sick—healthy; weak--strong
19. because/ so因為 所以
Bones are important because they help us move freely.
骨骼很重要因為它們能幫助我們自由地移動 。
Bones help us move freely, so they are important.
骨骼能幫助我們自由地移動，所以它們很重要 。
20. Although/ but 雖讓，但是
Bones are hard on the outside, but they’re soft on the inside.
Although bones are hard on the outside, they are soft on the inside.
21. before lunchtime 午餐前
22. Although I’m very busy at school, I try to exercise three times a week.
雖然在學(xué)校我非常忙，但是我努力一周鍛煉3次
Communication Workshop
1. do a survey at school 在學(xué)校做個調(diào)查
2. good/ bad habits 好習(xí)慣、壞習(xí)慣
3. I’m fast so I don’t waste water. 我很快所以不浪費水
4. When you exercise, it makes your bones stronger.
當(dāng)你鍛煉時，它讓你的骨骼更強壯 。
5. play ping-pong 打乒乓球
6. I have a lot of good habits, but I need to eat less junk food and exercise more. 我有許多好習(xí)慣，但我需要少吃垃圾食品、多做鍛煉 。
7. take fast showers. 快速地淋浴8. in the blanks在空格中
Unit 5Helping
Getting Ready
1.protect the environment保護環(huán)境
2.recycle bottles/ plastic/ paper回收瓶子，塑料紙 。
3.save electricity/ water節(jié)電/節(jié)水
4.turn off lights / the TV關(guān)燈，關(guān)電視
Lesson 13Helping Your Community
1.Make a reply to requests對要求做一個回復(fù)
2.on the notice board在通知板上
3.do volunteer work做志愿者的工作
4.similar/different相似，不同
5.It seems that it dirtier than I thought.看起來比我們想象的更臟
6.It’s really a shame.真的很遺憾
7.There is some metal here and some old cans too.
這里也有一些金屬和一些舊的
8.You have a rope with you, right?你有一條繩子，對嗎
9.pieces of wood幾塊木頭
10.Just a second.稍等
11. be finished完成了的We are finally finished.我們最終完成了
12. litter on the beach在海灘上扔?xùn)|西
I think we really need to let people know they shouldn’t litter on the beach.我認為我們真的需要讓人們知道他們不應(yīng)該在海灘上扔?xùn)|西
13. put up a notice張貼一個通知
14. complete a form填寫一個表格
15. read sth. to sb.給某人讀…….
16. beach clean-up海灘清掃（名詞短語） clean up the beach
17. two cans of soup兩罐湯
18. I have an exam tomorrow, so I can’t play basketball with you.
明天我有一場考試，因此我不能和你一起打籃球 。
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