some of the introduction

例句：

1. 1. I needsome more time to prepare for the exam.
   我需要更多时间准备考试。
2. 2. Some peoplelike to read books in their free time.
   有些人喜欢在空闲时间阅读书籍。
3. 3. Somestudents are good at math and others aregood at science.
   有些学生擅长数学，而另一些擅长科学。