Unit 4 知识点 D部分练习 2025-2026学年沪外教版八年级英语下册

八年级英语下册Unit4知识点-D部分练习 小试牛刀 A. 选用方框中的短语填空（每个限用一次） | break down | end up | make some changes | do their part | produce too much plastic | 1. Humans __________ every year. 2. Millions of tons of plastic __________ in the oceans. 3. One plastic bottle can take hundreds of years to __________. 4. Haoyu said he should __________ to protect the environment. 5. Everyone should __________ to reduce pollution. B. 句型转换（改为一般疑问句并作肯定或否定回答） 1. Haoyu and his friend felt sick during their trip. 一般疑问句：________________________________________________ 肯定回答：________________ 否定回答：________________ 2. You can bring your own water bottle to school. 一般疑问句：________________________________________________ 肯定回答：________________ 否定回答：________________ 3. Plastic pollution is harmful to the environment. 一般疑问句：________________________________________________ 肯定回答：________________ 否定回答：________________ 配套练习 A. 单项选择（★） 从A、B、C、D中选择最佳答案。 1. What did Haoyu and his friend see at the seaside? A. Beautiful fish. B. Plastic everywhere. C. Clean water. D. Many tourists. 2. How much plastic ends up in the oceans every year? A. 8 million tons. B. 10 million tons. C. 12 million tons. D. 15 million tons. 3. How long can a plastic bottle take to break down? A. 10 years. B. 100 years. C. Hundreds of years. D. 1,000 years. 4. Which of the following is a good way to reduce plastic pollution? A. Use more plastic bags. B. Buy bottled water every day. C. Bring your own cloth bag when shopping. D. Throw plastic waste into the river. 5. What does “reuse” mean? A. To use again. B. To throw away. C. To buy new. D. To break down. B. 完成句子（★★） 根据句子内容，用正确的词汇完成句子。 1. 浩宇和他的朋友去海边旅行时感到有点不舒服。 When Haoyu and his friend travelled to the seaside, they felt a little __________. 2. 每年至少有800万吨塑料最终流入海洋。 At least 8 million tons of plastics __________ __________ in the oceans every year. 3. 一个塑料瓶可能需要数百年才能分解。 One plastic bottle could take hundreds of years to __________ __________. 4. 学生可以自带水瓶上学，使用布袋，少买新的塑料制品。 Students could bring their own __________ __________ to school, use cloth bags and buy fewer new plastic products. 5. 每个人都应该尽自己的一份力来保护环境。 Everyone should __________ their __________ to protect the environment. 拓展思考 Part 1（描述你日常生活中如何减少塑料污染） 写一段话（至少5句）。 使用以下表达：I try to reduce plastic pollution by ... For example, I ... I also ... I think it’s important because ... __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ Part 2（给同学写一段话，建议三种减少塑料使用的简单方法） 写一段话（至少5句）。 使用以下表达：Here are three easy ways to reduce plastic use. First, ... Second, ... Third, ... Let’s do our part to protect the environment. __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ Part 3（讨论：为什么塑料瓶需要数百年才能分解？这对环境意味着什么？） 写一段话（至少5句）。 使用以下表达：Plastic bottles take hundreds of years to break down because ... This means that ... As a result,... We should ... __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ 参考答案与解析 小试牛刀 A 1. produce too much plastic 2. end up 3. break down 4. make some changes 5. do their part 小试牛刀 B 1. Did Haoyu and his friend feel sick during their trip? Yes, they did. / No, they didn’t. 2. Can you bring your own water bottle to school? Yes, I can. / No, I can’t. 3. Is plastic pollution harmful to the environment? Yes, it is. / No, it isn’t. 配套练习 A 1. B 2. A 3. C 4. C 5. A 配套练习 B 1. sick 2. end up 3. break down 4. water bottle 5. do, part 拓展思考（示例） Part 1 I try to reduce plastic pollution by using a reusable water bottle. For example, I never buy bottled water. I also bring my own cloth bag when I go shopping. I think it’s important because plastic waste harms animals and stays in the environment for centuries. I hope more people will join me. Part 2 Here are three easy ways to reduce plastic use. First, use a reusable water bottle instead of buying plastic bottles. Second, bring your own cloth bag when shopping. Third, avoid products with too much plastic packaging. Let’s do our part to protect the environment. Part 3 Plastic bottles take hundreds of years to break down because plastic is not biodegradable. This means that every piece of plastic ever made still exists somewhere. As a result, plastic waste accumulates in oceans and harms marine life. We should reduce, reuse, and recycle plastic to prevent further damage. 1 学科网（北京）股份有限公司 $