英语中有许多不同类型的句子，其中包括松散句和圆周句。松散句是指句子中的成分之间有着比较松散的联系，而圆周句则是指句子中的成分之间有着非常密切的联系。下面是一些例句，可以帮助我们更好地理解这两种类型的句子。
松散句例句
- My sister, who is a doctor, just got back from a medical conference.
- After the rain stopped, we went for a walk in the park.
- The book, which I borrowed from the library, was really interesting.
- He is a great musician, but not a very good businessman.
在这些例句中，每个成分都有一定的自由度，它们之间的联系并不是非常紧密。例如，在第一句中，“my sister”和“just got back from a medical conference”之间的联系并不是非常紧密，因为中间有一个相当长的插入语。
圆周句例句
- The man who stole the car was arrested by the police.
- I cannot believe that he actually finished the marathon.
- She always wears red lipstick, which makes her stand out in a crowd.
- The teacher, who was very patient, helped the students understand the difficult material.
在这些例句中，每个成分都与句子其他部分有着非常密切的联系。例如，在第一句中，“the man”和“was arrested by the police”之间的联系是非常紧密的，因为“the man”是“was arrested by the police”的主语。
总的来说，松散句和圆周句是英语中常见的两种句子类型。了解这两种句子类型将有助于我们更好地理解英语并提高我们的写作和口语能力。
