由firstly、 secondly、thirdly等引导的句子之间构成了并列关系，意思是“第一点是……，第二点是……，其三是……”。以下内容是雅思口语中常用连接词的分类，供大家阅读和参考。
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一、并列关系
由firstly、 secondly、thirdly等引导的句子之间构成了并列关系，意思是“第一点是……，第二点是……，其三是……”。不过，外国人在日常交谈中表达自己的观点时，并不太注意这些提示语的使用。如果要使用，他们更喜欢以下的表达方式:
1、Firstly=to start with/to begin with/first off
2、Secondly=also/as well/and
3、Thirdly=furthermore/besides/ last but not least
二、因果关系
So/ So that/because = cuz/ therefore，therefore是比较正式的用法，而cause和coz是because的非正式用法，可以在回答时适当地替换because，但是记住不要用得太多，否则会给考官留下太过刻意的印象。
三、让步关系
Although / Even though / Even if / as long as
四、转折关系
转折关系是指句子的后半部分不遵循前面的意思说下去，而是与前面部分的意思相反，发生转折。在中文里面，表达转折关系的关联词包括:虽然……但是……、……却……、尽管……还是……等等。在英语中，表示转折的词有But……、However……、Though等。Though常放在句末，相当于在句中加上but。
五、递进关系
1、Another point I would love to say is that……
2、On top of that I can also add that……
3、And I shouldn't forget to mention that ……
4、In additionto what I’ve just said, I can add that……
5、Apart from what I’ve mentioned, another key point is that
五、递进关系
1、Another point I would love to say is that……
2、On top of that I can also add that……
3、And I shouldn't forget to mention that ……
4、In additionto what I’ve just said, I can add that……
5、Apart from what I’ve mentioned, another key point is that
六、修饰关系
that / who / which / when / where
七、对比关系
On the other hand / while / whereas / In contrast
八、举例和泛指
like / such as / Take...for example / In some cases / and stuff like that / and things like that / or something like that
九、非连词表达方式
tend to / basically / actually / get
十、其他
as well / as well as / in terms of / instead of / rather than