Unit2Section B project知识点练习2025-2026学年人教版英语八年级下册

八年级英语下册Unit2知识点-Section B project练习 小试牛刀 A. 用所给动词的适当形式填空（一般现在时 / 情态动词） 1. Using a phone or computer for a long time __________ (cause) digital eye strain. 2. If you have eye strain, you may __________ (suffer) from tired eyes, dry eyes, or headaches. 3. You should __________ (reduce) screen time and look away from devices frequently. 4. If you often suffer from eye strain, you __________ (should) visit an eye doctor. 5. Health is not everything, but you __________ (have) nothing without it. B. 选用方框中的短语填空（每个限用一次） | digital eye strain | reduce screen time | look away from | suffer from | act now | 1. Protect your eyes from ____________________. 2. You may ____________________ tired eyes and headaches. 3. You should ____________________ and ____________________ devices frequently. 4. It is important to ____________________ before your vision gets worse. C. 句型转换（改为一般疑问句并作肯定或否定回答） 1. Using a phone for a long time causes eye strain. 一般疑问句：________________________________________________ 肯定回答：________________ 否定回答：________________ 2. You should visit an eye doctor if you have eye strain. 一般疑问句：________________________________________________ 肯定回答：________________ 否定回答：________________ 3. Eye strain can make our vision worse over time. 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. Which of the following is a common cause of digital eye strain? A. Reading a book. B. Using a phone or computer for a long time. C. Playing outside. D. Eating too much sugar. 2. What symptoms may you have if you suffer from eye strain? A. Stomachache and fever. B. Tired eyes, dry eyes, and headache. C. Toothache and sore throat. D. Runny nose and cough. 3. Why is it important to deal with eye strain? A. Because it can cause blindness immediately. B. Because it can make our vision worse over time. C. Because it is contagious. D. Because it is painful. 4. What should you do to avoid eye strain? A. Use your phone more. B. Reduce screen time and look away from devices. C. Sit closer to the screen. D. Watch TV in the dark. 5. According to the project, what is one health problem you can focus on? A. Food allergy. B. Broken leg. C. Heart disease. D. Diabetes. B. 完成句子（★★） 根据句子内容，用正确的词汇完成句子。 1. 长时间使用手机或电脑会导致数字眼疲劳。 Using a phone or computer for a long time can cause __________ __________ __________. 2. 你可能会有眼睛疲劳、干眼和头痛。 You may have __________ eyes, __________ eyes, and headache. 3. 眼疲劳会随着时间的推移使我们的视力变差。 Eye strain can cause our __________ to get __________ over time. 4. 减少屏幕时间。 __________ screen time. 5. 如果你经常患有眼疲劳，请去看眼科医生。 Visit an eye __________ if you often __________ from eye strain. 拓展思考 Part 1（描述你或朋友曾经遇到的一种健康问题及解决方法） 写一段话（至少5句）。你或朋友遇到过什么健康问题（如头痛、眼疲劳、过敏等）？原因是什么？你们是怎么处理的？ 使用以下表达：One of my friends / I once had, because, we / I felt, the doctor advised, we / I learned that __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ Part 2（给同学写一段话，建议如何预防眼疲劳） 写一段话（至少5句）。你想提醒同学保护眼睛。说明原因、症状和具体建议。 使用以下表达：Hey, to prevent digital eye strain, you should, don’t forget to, if you feel, it’s important to, take care of your eyes __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ Part 3（为什么“健康不是一切，但没有健康就什么都没有”？） 写一段话（至少5句）。解释健康对学习、生活和幸福的重要性。 使用以下表达：Health is very important because, without it, you cannot, for example, if you are sick, you may, so we should, remember that __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ 参考答案与解析 小试牛刀 A 1. causes (一般现在时，第三人称单数) 2. suffer (may + 动词原形) 3. reduce (should + 动词原形) 4. should (情态动词) 5. have (一般现在时，谚语) 小试牛刀 B 1. digital eye strain 2. suffer from 3. reduce screen time, look away from 4. act now 小试牛刀 C 1. Does using a phone for a long time cause eye strain? Yes, it does. / No, it doesn’t. 2. Should I visit an eye doctor if I have eye strain? Yes, I should. / No, I shouldn’t. 3. Can eye strain make our vision worse over time? Yes, it can. / No, it can’t. 配套练习 A 1. B（手册：Using a phone or computer for a long time） 2. B（手册：Tired eyes, dry eyes, headache） 3. B（手册：Eye strain can cause our vision to get worse over time） 4. B（手册：Reduce screen time. Look away from devices frequently） 5. A（列表：food allergy, headache, backache, eye strain, cut, burn） 配套练习 B 1. digital eye strain 2. tired, dry 3. vision, worse 4. Reduce 5. doctor, suffer 拓展思考（示例） Part 1 One of my friends once had digital eye strain because he played games on his phone for hours every day. He felt tired eyes and headaches. The doctor advised him to reduce screen time and take breaks. He learned that looking away from the screen every 20 minutes helps a lot. Now his eyes feel much better. Part 2 Hey, to prevent digital eye strain, you should reduce screen time. Don’t forget to look away from your device every 20 minutes. If you feel tired or dry eyes, it’s important to rest. Take care of your eyes – they are very precious. Part 3 Health is very important because without it, you cannot enjoy life or study well. For example, if you are sick, you may miss school and feel unhappy. So we should eat well, exercise, and rest enough. Remember that “Health is not everything, but you have nothing without it.” So take good care of your body. 1 学科网（北京）股份有限公司 $