汉语和英语两种语言之间最基本的区别在于句法方面。英语重形合（hypotaxis），句中各意群、成分都用适当的连接词（connective）、介词（preposition）、非限定性动词短语（phrase）或从句（clause）等来表达其相互关系，因而结构严谨但缺乏弹性；而汉语句法则重意合（parataxis），句中各意群、成分通过内在的联系贯穿在一起，不一定或很少用连接词、介词，也没有非限定性动词短语或从句，因此结构松散，但富于弹性，从句子整体来看，意义清楚，不会产生误解。　　今天，我们就来分门别类地介绍一些英语词类中最容易掌握，而且必须掌握的连接词。　　Chronological (temporal) sequence 顺序　　At first, first, firstly, second, secondly, then, next, eventually, in the end, lastly, later, subsequently, at the same time, simultaneously, afterwards, finally, last but not least　　Additive 补充　　And, in addition, moreover, besides, above all, further, furthermore, not only … but also, what is more, in the same way　　Comparison 比较　　Likewise, equally, similarly, in comparison, correspondingly, in the same way　　Comparison / Contrastive 比较 / 对比　　But, however, whereas, conversely, in contrast, unlike, on the contrary, on the other hand, yet　　Concessive 让步　　However, nevertheless, even though, still, yet　　Expressing an alternative 提出可选项　　Alternatively, on the other hand, rather　　Causal (result/consequence) 因果　　Consequently, so, accordingly, as a result, for this reason, hence, thus, owing to this/that, due to this/that, because of this/that, therefore, with this in mind, under these circumstances Example / illustration 举例　　For example, that is, such as, for instance, thus, as follows, the following, in this case　　Explanation / rephrasing 解释　　That is to say, in other words, namely, this means, to put it in another way, to put it simply　　Thematising/starting a new point 提出新观点　　With regard to, in regard to, with reference to, turning to, as for…, as far as… is concerned　　Generalisation / hedging 模糊限制语　　Generally, in general, on the whole, in most cases, normally, as a rule, in most cases, usually, for the most part　　Interpersonal （情感）交际　　Fortunately, unfortunately, certainly, luckily, needless to say, strangely enough　　Emphasis/highlighting 强调　　Mainly, especially, notably, in particular, particularly, clearly then　　Conclusion 总结　　In conclusion, to conclude, finally, to sum up, in brief, therefore　　Condition/deduction 条件　　Otherwise, under the circumstances, if so, if not, in that case, otherwise