表示开始：first of all, in the first place, at the very beginning, to begin with, currently, at present, for one thing等。
表示承接：besides, further more, in addition, moreover, whats more, meanwhile, apart from, as well as, similarly, in the same way等。
表示转折：however, whereas, while, on the contrary, in contrast, on the other hand等。
表示结论：in conclusion, in brief, in short, to sum up, ultimately, overall等。
表达句子之间逻辑关系的短语和词汇：
表示原因：because , accordingly, due to, owing to, for this reason, since, as a result, as a consequence等。
表达观点：in my opinion, personally, from my viewpoint, it seems to me, it is clear to me that, as far as I am concerned
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