Hypotaxen im Englischen

Naja, Schachtelsätze sind im Englischen eigentlich nicht so üblich. Trotzdem sollte man natürlich nicht nur einen Hauptsatz an den anderen reihen, sondern auch mal ruhig Hypotaxen bilden. Ein paar grundlegende Dinge dazu findest du hier:
http://www.ego4u.de/de/cram-up/writing/text

Hier findest du einen Überblick über wichtige Arten von Nebensätzen (ist fürs Deutsche, aber gilt auch fürs Englische):

http://www.lernpfad.at/html/nebensatze.html

Letztlich geht es ja in deiner Frage darum, wie du die Nebensätze an die Hauptsätze anbindest bzw. wie du überhaupt Sätze und Gedanken miteinander verknüpfst, ohne sie einfach nur so nebeneinander zu stellen.

Hier findest du wichtige Konjunktionen (= Nebensätze an Hauptsätze anbinden):

http://www.grammatiken.de/englische-grammatik/englischer-satzbau-konjunktionen-zeit-gegensatz-ursache-wirkung.php

Und hier noch eine Latte von Ausdrücken, die nicht unbedingt nur in Hypotaxen einsetzbar sind, die dir aber helfen, die Übergänge zwischen Sätzen bzw. zwischen Gedanken elegant zu gestalten (gefunden bei www.studygs.net):

Addition:
also, again, as well as, besides, coupled with, furthermore, in addition, likewise, moreover, similarly

Consequence:
accordingly, as a result, consequently, for this reason, for this purpose,
hence, otherwise, so then, subsequently, therefore, thus, thereupon, wherefore

Generalizing:
as a rule, as usual, for the most part,
generally, generally speaking, ordinarily, usually

Exemplifying:
chiefly, especially, for instance, in particular, markedly, namely,
particularly, including, specifically, such as

Illustration:
for example, for instance, for one thing, as an illustration,
illustrated with, as an example, in this case

Emphasis
above all, chiefly, with attention to, especially, particularly, singularly

Similarity:
comparatively, coupled with, correspondingly, identically, likewise, similar, moreover, together with

Exception:
aside from, barring, besides, except, excepting, excluding, exclusive of, other than, outside of, save

Restatement:
in essence, in other words, namely, that is, that is to say,
in short, in brief, to put it differently

Contrast and Comparison:
contrast, by the same token, conversely, instead, likewise,
on one hand, on the other hand, on the contrary, rather,
similarly, yet, but, however, still, nevertheless, in contrast

Sequence:
at first, first of all, to begin with, in the first place, at the same time,
for now, for the time being, the next step, in time, in turn, later on,
meanwhile, next, then, soon, the meantime, later, while, earlier,
simultaneously, afterward, in conclusion, with this in mind,

Summarizing:
after all, all in all, all things considered, briefly, by and large, in any case, in any event,
in brief, in conclusion, on the whole, in short, in summary, in the final analysis,
in the long run, on balance, to sum up, to summarize, finally

Diversion:
by the way, incidentally

Direction:
here, there, over there, beyond, nearly, opposite, under, above,
to the left, to the right, in the distance