Addition

MarkerUse / registerExample
Furthermore / Moreover formal; adds a stronger or more important point Furthermore, the report failed to address the key concerns.
In addition (to) neutral-formal; can precede a noun or clause In addition to the salary, you receive full benefits.
What is more slightly informal; emphasises a surprising extra point It was expensive — what is more, it didn't even work.

Contrast

MarkerUseExample
Nevertheless / Nonetheless formal; contrast despite a previous point (= even so) It was a risk. Nevertheless, we decided to proceed.
On the contrary contradicts or denies what was just said "You seem unhappy." "On the contrary, I'm delighted."
In contrast / By contrast compares two different things side by side The north is cold. By contrast, the south is very warm.
Whereas / Whilst contrasts within one sentence (formal) She prefers tea, whereas her brother drinks coffee.
Having said that introduces a contrasting point after a concession (semi-formal) The food was average. Having said that, the atmosphere was lovely.
On the contrary vs on the other hand: "On the contrary" CONTRADICTS ("No, that's wrong"). "On the other hand" BALANCES two valid ideas ("There are advantages … on the other hand, there are also disadvantages").

Reason and cause

MarkerUseExample
Given that formal; reason that is already established Given that the budget was cut, the results are impressive.
In view of (the fact that) formal; considering a specific reason In view of the fact that you are ill, you may leave early.
Bearing in mind (that) formal; taking a reason into account Bearing in mind the cost, this seems a reasonable offer.

Summarising and concluding

In conclusion / To conclude: used at the start of a formal final paragraph.
To sum up / In summary: slightly less formal; recaps main points.
All in all / On balance: weighing everything considered.
Overall: general wrap-up, common in both formal and informal writing.

Clarifying and reformulating

MarkerExample
That is to say / i.e. The deadline has been moved — that is to say, you have an extra week.
In other words She refused to comment. In other words, she had something to hide.
Namely Only two students passed, namely Alex and Maria.

Exercises

Choose the most appropriate discourse marker.

1. The project was expensive. ___, the results were disappointing.

2. "You must be exhausted." "___, I feel completely energised."

3. The interview went badly. ___, she was offered the job.

4. The hotel was noisy. ___, the location was perfect for sightseeing.

5. ___ the situation, we have decided to postpone the event.