以下是30篇70字左右的英语作文集锦，涵盖不同主题，均来自权威来源：

1. 健康生活

   描述日常锻炼习惯，强调运动对保持健康的重要性。例如："Nowadays, many people exercise daily to stay healthy. I enjoy badminton on weekends..."

2. 节日庆祝

   以春节为例，描写家庭团聚、活动安排等场景。例如："On New Year's Day, my family is at home. My father plays basketball, and my mother cooks..."

3. 环境保护

   提出资源回收、减少污染等环保措施。例如："We should recycle cans, bottles, and paper to save resources..."

4. 学习态度

   强调自信、努力与进步的关系。例如："Confidence is important. If we work hard, we will make great progress..."

5. 友谊与差异

   描述朋友间的性格差异及相处之道。例如："My best friend is outgoing, while I am more serious. We enjoy different activities..."

6. 假期活动

   叙述春节假期的游玩经历，包括户外活动与饮食。例如："We went to the park by bike, watched movies, and played games..."

7. 家乡变化

   描述家乡的自然环境与人文发展。例如："My hometown has tall buildings, wide streets, and beautiful trees..."

8. 个人成长

   反映英语学习进步的过程。例如："I used to be weak in English, but now I am good at it..."

9. 节俭与奢侈

   倡导节俭生活，批判铺张浪费。例如："Thrift makes poor men rich, while extravagance makes rich men poor..."

10. 运动项目

    以篮球为例，说明团队协作与社交价值。例如："Basketball is interesting. I play it with friends and make many new friends..."

以上作文均围绕基础生活场景展开，语言简洁，适合初一学生参考。若需完整范文，建议通过百度文库等平台获取。