复合句是由两个或两个以上句子连接而成的句子。在英语语法中，复合句包含主句和从句，从句可以是名词从句、形容词从句或副词从句。下面是15个常见的复合句基本句型及例句：
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名词从句作主语：That he failed the exam surprised everyone. （他考试不及格，这让每个人都很惊讶。）
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名词从句作宾语：I believe that he is telling the truth. （我相信他说的是实话。）
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名词从句作表语：His biggest fear is that he will never find love. （他最大的恐惧是他永远找不到爱情。）
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名词从句作定语：The book that I borrowed from the library is very interesting. （我从图书馆借的那本书非常有趣。）
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名词从句作补语：My biggest hope is that he will come back soon. （我最大的希望是他能尽快回来。）
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形容词从句作定语：She is wearing a dress that is too small for her. （她穿了一件对她来说太小的连衣裙。）
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形容词从句作表语：The problem is more complicated than I thought. （这个问题比我想象的更加复杂。）
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形容词从句作宾语补足语：I find it hard to believe that he is capable of such a thing. （我很难相信他有能力做出这样的事情。）
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副词从句作状语：After she finished her homework, she went to bed. （她做完作业后就去睡觉了。）
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副词从句作时间状语：I will call you as soon as I finish the meeting. （我开完会后会马上给你打电话。）
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副词从句作原因状语：Because he was sick, he couldn't come to the party. （因为他生病了，他不能来参加聚会。）
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副词从句作结果状语：She studied hard, so she passed the exam. （她努力学习，所以她通过了考试。）
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副词从句作条件状语：If it rains tomorrow, we will stay at home. （如果明天下雨，我们会呆在家里。）
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副词从句作让步状语：Although he was tired, he kept working. （虽然他很累，但他一直在工作。）
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副词从句作比较状语：He runs faster than I do. （他跑得比我快。）
学习复合句的基本句型，对于英语学习者来说是非常重要的。希望这篇文章能够帮助大家更好地掌握英语语法知识。
