First and foremost - ïåðâîå è íàèáîëåå âàæíîå; âî-ïåðâûõ

First and foremost - ïåðâîå è íàèáîëåå âàæíîå; âî-ïåðâûõ
The first reason why - ïåðâàÿ ïðè÷èíà, ïî÷åìó...
Secondly - âî-âòîðûõ
In fact - ñîáñòâåííî, â ñóùíîñòè
In other words - äðóãèìè ñëîâàìè
What is more - ÷òî åùå âàæíåå
Furthermore - ê òîìó æå, áîëåå òîãî
However - òåì íå ìåíåå, îäíàêî
Actually - âîîáùå-òî, íà ñàìîì äåëå
Basically - â îñíîâíîì, ïî ñóòè
Understandably - ïî âïîëíå ïîíÿòíûì ïðè÷èíàì; ïîíÿòíî, ÷òî
Come to think of it - åñëè âäóìàòüñÿ
Not surprisingly - íåóäèâèòåëüíî
Although - õîòÿ
Even though - äàæå åñëè
On the one hand...on the other hand... - ñ îäíîé ñòîðîíû...ñ äðóãîé ñòîðîíû...
It is worth considering - ñòîèò çàìåòèòü
So - èòàê, ïîýòîìó
Finally - íàêîíåö
As a result - â ðåçóëüòàòå
To sum up - ïîäâîäÿ èòîã, ñóììèðóÿ ñêàçàííîå
On balance - â êîíå÷íîì ñ÷åòå
Consequently - ñëåäîâàòåëüíî