🌍 Unit 8: Reduce, Reuse, Recycle 互動學習寶盒
適合四年級學童自主複習 | 結合語音、單字卡與文法互動
| 單字 (Vocabulary) | 英文定義 (Definition) | 課本精選例句 (Sentences) |
|---|---|---|
| reduce 減少 | To use less of something. | The three Rs of the environment are reduce, reuse, and recycle. |
| reuse 重複使用 | To use something again. | Reduce by choosing to use less energy. Reuse by finding new uses for junk. |
| recycle 回收再利用 | To change waste into something new. | Man-made things are crushed and melted down. They are then made into new things. |
| landfill 垃圾掩埋場 | A place where trash is buried. | Every day we make trash. Where does it go? Some of it is buried in landfills. |
| conserve 節約/保護 | To protect or save something from waste. | You can conserve instead of throwing away. Water can be conserved. |
| cardboard 硬紙板 (手寫) | Thick, stiff paper used for boxes. | It is made from paper. It is used to make shoe boxes. It is soft when wet. |
| chemicals 化學物質 (手寫) | Substances used for cleaning or science. | They are used to clean things. They can hurt your skin. Don't drink them! |
| metal 金屬 (手寫) | A hard, strong material like iron or steel. | This is used to make cans and also cars. It's used to make things that must be strong. |
💡 挑戰一：被動語態與情態助動詞 (Passive with modals)
點擊題目，就能揭曉正確答案，看看自己寫對了沒！
1. Clothes (can/color) ___________ with natural dyes.
答案：can be colored
2. Save the bricks that (can/reuse) ___________, and the broken ones (can/throw away) ___________.
答案：can be reused / can be thrown away
3. Energy (may/conserve) ___________ by making good choices.
答案：may be conserved
4. Fleece sweaters (can/make) ___________ from recycled water bottles.
答案：can be made
5. Future cars (must/design) ___________ to run on electricity.
答案：must be designed
⏰ 挑戰二：When (當...的時候) 句型重組對照
當我們回收垃圾時，我們是在節約能源與材料！點擊看課本範例答案：
例句 1：當我們離開家時，我們關掉電燈。
課本解答：When we leave the house, we turn off the lights.
例句 2：當我去購物時，我走路或騎腳踏車。
課本解答：When I go shopping, I walk or go by bike.
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