一、什么是并列句？
在两句话中间加连词所构成的句子为并列句。
二、英语中常见的连词
1、平行关系：and、not only…but also
逻辑关系词：similarly、equally、likewise、at the same time
2、转折关系：but、yet、while、whereas
逻辑关系词：however、nevertheless、on the contrary、conversely、unfortunately、by contrast
3、递进（顺承）关系：then
逻辑关系词：besides、furthermore、moreover、additionally、subsequently
4、因果关系：for、so
逻辑关系词：thus、therefore、as a result、consequently
5、选择关系：or
逻辑关系词：alternatively
三、并列句在写作中的使用
写作中只要上下句之间有逻辑关系就一定要用逻辑关系词（连词、副词、介词短语）。
Eg1:
爱情已经不在了他还在留恋过去。
Romance has evaporated.By contrast she still keeps the past in mind.
Romance has evaporated,and by contrast she still keeps the past in mind.
Eg2:
有朋自远方来，不亦乐乎。
There seem a host of companies coming from a long distance,and consequently
I feel exceedingly delighted.
Eg3:
你还记得那天吗？我没有通过四级考试，一个人在雨中哭泣。
你走过来拍拍我的肩膀告诉我人生没有终点。
Do you still keep the day in mind?I failed to pass CET-4.Conversely,I shed
tears alone in the rain,and similarly,you came up to me then beat my shoulder,
telling me "there seems no destination in life".
四、连词和其他的逻辑关系词的区别
连词前面有没有句号均可，其他逻辑关系词的前面一定得是句号或者是加连词and。