Reason/cause
… because/ as / since / seeing that + clause
… because of / on account of/ in view of + a noun/gerund
…owing to / due to + a noun/gerund/the fact that + clause
Purpose
To/in order to / so as (not) to + infinitive
So that + a clause
Result/Consequence
Consequently / As a consequence / As a result / Therefore, … + clause
As a consequence of / As a result of + noun
So, … + cause
Addition
Moreover / Furthermore / In addition / Additionally / Besides / What is more, … (used after a strong pause and separated from the sentences. They are introduced by a comma).
As well as / In addition to / Beside + noun/gerund
Contrast
On the contrary, …/ In contrast, …+ a clause
Alternatively, … + a clause
In contrast to / Contrary to + a noun
unlike + a noun/Gerund
when compared to + a noun
, … whereas/while (used to link two contrasting ideas) + a clause.
On the one hand …, On the other hand (links two contrasting ideas / paragraphs)
Concession
Although / (Even) though + a clause
In spite of / Despite/ (regardless of) + a noun/gerund
However / Nevertheless / Nonetheless/Still / Yet, … (used to introduce a new idea which marks a contrast with previously stated ideas).
Exemplification
For example / For instance,
such as …
Succession
First of all / Firstly / To begin with / First ….
Second / Secondly / Then …
Third / Thirdly / After that…
Conclusion
Finally / In short / To sum up / In conclusion / Lastly / Last but not least/ On balance, …