【知识点详解】
在“2015七年级英语上册Unit9Myfavoritesubjectisscience单元写作&SectionB3a_3b练习新版”这个主题中，主要涉及的是七年级学生的英语学习，特别是关于时间表达、连词使用以及谈论个人喜好等语言技能的培养。
1. **时间表达**：
- 在八点钟：at 8:00
- 在星期六下午：on Saturday afternoon
- 持续两小时：for two hours
- 第二天：the next day
- 在那之后：after that
2. **活动相关的短语**：
- 上体育课：have PE lessons
- 上美术课：have art lessons
- 生日聚会：birthday party
- 与……一起玩：play with...
- 篮球比赛：basketball match
3. **句子构造**：
- 1. At 8:00 I have science class. It is difficult but fun.
- 2. I want to meet you on Saturday evening and I am free then.
- 3. I like Tuesday because I have music and geography. They're my favorite subjects.
- 4. My class finishes at 2:20, and after that I have an art lesson for one hour, from 2:30 to 3:30.
- 5. My favorite subject is Chinese because my Chinese teacher is very interesting.
4. **翻译句子**：
- 1. How is your day going?
- 2. That's true.
- 3. Let's meet on Sunday.
- 4. Is that convenient for you?
- 5. Thank you for your email.
5. **以读促写**（部分翻译）：
- It's Thursday. I'm really busy! Classes start at 8:00. First, I have English. I like English. It finishes at 8:50. Then at 9:00, I have science. It's interesting. Next, at 10:00, I have art. It's boring, but at 11:00, I have P.E. I like P.E. because it's my favorite subject! I eat lunch at 12:00. After lunch, I have music at 1:00. It is relaxing and I like my music teacher, ...
这个单元的学习内容主要是帮助学生掌握如何用英语准确描述日常的课程安排，表达个人对学科的喜好，并通过使用连接词如because, but, and, then, after that等来增强句子的连贯性。同时，也强调了词汇的积累，如时间表达和活动相关短语的翻译，这些是日常对话和写作的基础。通过练习，学生可以提高自己的英语写作能力，为更高级的英语学习打下坚实的基础。
