英语并列连词与从属连词

并列连词：and but or之类的就是并列连词。并列连词单词前后的两个单词可以互换。

从属连词：用来连接各种从句。until(till)、since 、by就是从属连词。

例句：
并列连词：Apple and banana are very delicious.
从属连词：I studied hard until 12 o'clock last night.