it was very dark ,so they turned on a torch.so是副词还是连词,怎样区分

问题描述:

it was very dark ,so they turned on a torch.so是副词还是连词,怎样区分

连接副词使用时其前通常用分号或句号.
例如
I don’t like it; besides,it’s too expensive.
如果其前用逗号,则通常带有并列连词.
例如
I don’t like it,and it’s too expensive besides.
句中的so只是连词.