连接代词和连接副词是英语语法中非常重要的一部分，它们在句子中起到连接不同部分的作用。下面是一些常见的连接代词和连接副词：
连接代词
That：用于引导定语从句，例如：“The book that I borrowed from the library was very interesting.”
Which：也用于引导定语从句，但是它可以代替整个句子，例如：“The book, which I borrowed from the library, was very interesting.”
Who：用于引导定语从句，代表人，例如：“The man who helped me was very kind.”
Whom：也用于引导定语从句，代表人，但是它作为受词出现，例如：“The man whom I helped was very grateful.”
Whose：用于引导定语从句，表示所有关系，例如：“The woman whose car was stolen reported it to the police.”
What：用于引导名词从句，作为主语或宾语，例如：“What you said is true.”
连接副词
However：用于连接两个句子，表示一种对比或转折关系，例如：“I wanted to go to the party, however, I was too tired.”
Therefore：用于连接两个句子，表示结果或推论，例如：“I studied hard for the exam, therefore, I got a good grade.”
Moreover：用于连接两个句子，表示补充信息，例如：“I like to read books, moreover, I also enjoy watching movies.”
Nevertheless：用于连接两个句子，表示一种对比或转折关系，类似于but，例如：“The weather was terrible, nevertheless, we still went for a walk.”
Meanwhile：用于连接两个句子，表示同时发生的两件事情，例如：“I was cooking dinner, meanwhile, my husband was setting the table.”
以上是一些常用的连接代词和连接副词，学好它们可以让我们的英语表达更加准确和流畅。
