表列举：for example,for instance,such as
表补充：besides,in addition,moreover…
表对比：on the one hand… on the other hand,while…
表原因：because of,thanks to,due to ,owing to…
表结果：therefore,thus,as a result,so…
表结论：in a word,in brief,to sum up,to conclude…
表转折：however,nevertheless,after all,in spite of ,although…
连词的使用：
We are good friends and we should help each other.并列连词
As we are good friends,we should help each other.从属连词
Being good friendds,we should help each other.非谓语动词 表列举：for example,for instance,such as
表补充：besides,in addition,moreover…
表对比：on the one hand… on the other hand,while…
表原因：because of,thanks to,due to ,owing to…
表结果：therefore,thus,as a result,so…
表结论：in a word,in brief,to sum up,to conclude…
表转折：however,nevertheless,after all,in spite of ,although…
连词的使用：
We are good friends and we should help each other.并列连词
As we are good friends,we should help each other.从属连词
Being good friendds,we should help each other.非谓语动词