Unit8Time on the earth练习知识点2025-2026学年冀教版英语七年级下册

七年级英语下册Unit8知识点- Time on the earth练习 小试牛刀 A. 用所给动词的适当形式填空（一般现在时 / 一般将来时） 1. Our planet __________ (be) about 4.6 billion years old. 2. If we shorten the earth’s history into one day, humans __________ (appear) in the last two minutes. 3. At 6 p.m., water and sunlight __________ (begin) to provide energy for life. 4. In the future, humans __________ (face) more challenges to protect the earth. 5. The earth __________ (give) birth to different creatures at 9 p.m. on that time scale. B. 选用方框中的短语填空（每个限用一次） | a burst of | according to | give birth to | shorten into | all kinds of | 1. ____________________ the latest research, humans appeared 2.5 million years ago. 2. Midnight on the earth started with ____________________ volcanoes. 3. We can ____________________ the earth’s long history ____________________ one day. 4. The earth began to ____________________ different creatures at 9 p.m. 5. At 6 p.m., ____________________ plants started to grow. C. 句型转换（改为一般疑问句并作肯定或否定回答） 1. Life appeared at the bottom of the oceans around 3 to 4 a.m. 一般疑问句：________________________________________________ 肯定回答：________________ 否定回答：________________ 2. Dinosaurs were one of the largest creatures in the history of the earth. 一般疑问句：________________________________________________ 肯定回答：________________ 否定回答：________________ 3. We should protect the earth on World Earth Day. 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. How old is our planet? A. About 4.6 million years old. B. About 4.6 billion years old. C. About 2.5 million years old. D. About 65 million years old. 2. When did humans appear according to the passage? A. 2.5 billion years ago. B. 2.5 million years ago. C. 4.6 billion years ago. D. 65 million years ago. 3. If the earth’s history is shortened into one day, when do humans appear? A. In the first two minutes. B. In the last two minutes. C. At midnight. D. At 9 p.m. 4. What happened at 9 p.m. on the earth’s time scale? A. Life appeared at the bottom of the oceans. B. Water and sunlight began to provide energy. C. The earth gave birth to different creatures. D. Dinosaurs appeared. 5. When is World Earth Day? A. April 22. B. March 22. C. May 22. D. June 22. B. 完成句子（★★） 根据课文内容，用正确的词汇完成句子。 1. 我们的星球大约有46亿年的历史。 Our planet is about 4.6 __________ years old. 2. 如果把地球的历史缩短成一天，人类出现在最后两分钟。 If we __________ the earth’s history __________ one day, humans appear in the last two minutes. 3. 恐龙是地球历史上最大的生物之一。 Dinosaurs were one of the __________ __________ in the history of the earth. 4. 水与阳光开始为生命提供能量。 Water and sunlight began to __________ __________ for life. 5. 世界地球日鼓励人们拯救地球。 World Earth Day __________ people to save the earth. 拓展思考 Part 1（描述你对地球历史最感兴趣的一个时期） 写一段话（至少5句）。你对恐龙时代、生命起源还是人类出现最感兴趣？为什么？你想了解什么？ 使用以下表达：I am most interested in, because, it was a time when, I want to learn, it is exciting to think about __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ Part 2（给父母写一段话，请求参加一次地球日活动） 写一段话（至少5句）。学校计划在4月22日组织地球日环保活动，你需要得到父母的允许。说明活动内容、带队老师（Mr. Wang）以及你为什么想参加。 使用以下表达：may I join, our school is planning, the activity will be held on, I think it is a good chance to, please let me go because __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ Part 3（为什么保护地球很重要？） 写一段话（至少5句）。解释地球是我们唯一的家园，人类的活动影响了地球，我们应该采取什么行动。 使用以下表达：The earth is our only home, we should protect it because, humans have changed, we can, if we don’t act now __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ 参考答案与解析 小试牛刀 A 1. is (一般现在时，客观事实) 2. will appear (if 条件句，主句将来时) 3. begin (一般现在时，描述时间轴上的事件) 4. will face (in the future 将来时) 5. gives (一般现在时，描述时间轴上的事件) 小试牛刀 B 1. According to 2. a burst of 3. shorten, into 4. give birth to 5. all kinds of 小试牛刀 C 1. Did life appear at the bottom of the oceans around 3 to 4 a.m.? Yes, it did. / No, it didn’t. 2. Were dinosaurs one of the largest creatures in the history of the earth? Yes, they were. / No, they weren’t. 3. Should we protect the earth on World Earth Day? Yes, we should. / No, we shouldn’t. 配套练习 A 1. B（课文：Our planet is about 4.6 billion years old） 2. B（课文：humans appeared only 2.5 million years ago） 3. B（课文：If we shorten this into one day, humans appeared in the last two minutes） 4. C（课文：At 9 p.m., the earth gave birth to different creatures） 5. A（课文：World Earth Day is on April 22） 配套练习 B 1. billion 2. shorten, into 3. largest creatures 4. provide energy 5. encourages 拓展思考（示例） Part 1 I am most interested in the age of dinosaurs because they were the largest creatures on earth. It was a time when dinosaurs ruled the land. I want to learn how they lived and why they died out. It is exciting to think about the earth 65 million years ago. I hope scientists can find more dinosaur fossils. Part 2 Dear Mum and Dad, may I join the Earth Day activity at school? Our school is planning a park clean-up on April 22. The activity will be held on World Earth Day. I think it is a good chance to help save the earth. Please let me go because I promise to work hard and be safe. I want to do something good for our planet. Part 3 The earth is our only home, and we should protect it because humans have changed the environment too much. We can save water, plant trees and reduce pollution. If we don’t act now, animals may die out and the weather may become worse. Every small action helps. Let’s protect the earth for the future. 1 学科网（北京）股份有限公司 $