About connectors: http://linguistics-elenapoparcea.blogspot.co.uk/2013/05/an-introduction-to-sentence-connectors.html
Using while and whereas
Although the conjunctions while and whereas have similar uses, there are some differences too. While, for example, can be used to introduce a time-clause. Whereas cannot be used to introduce a time-clause.
Read more at http://www.englishpractice.com/learning/using-while-and-whereas/#bJHD3juyIPUXbhCD.99
Stating Cause and Effect
|CAUSE — EFFECT|
|Consequently (adverb) and as a result (prepositional phrase) are connectives that transition the reader from the idea expressed in one clause to the idea expressed in the next clause. These connectives are followed by a clause expressing the effect of situation stated in the clause before it. A comma separates the adverb from the clause.|
|EFFECT — CAUSE|
|Because (since, as, though) and because of (due to, on account of) are connective prepositions that relate additional, nonessential information to the main clause. Because is complemented by a clause and because of is complemented by a noun phrase (NP) that states a reason (cause) for the effect stated in the main clause. – read more here|
Linking Words in English – Reasons and Results
Linking words help you connect the ideas in a sentence. In this lesson, you’ll learn some common linking words to express reasons and results.
Linking Words: Reasons
Because / Because of – read more here
You can use the following transitions instead of “So”:
Therefore / Consequently / As a Result / Thus / For this reason
**Note: When you start a sentence with these words, you need to put a comma after them. read more here
More about despite & in spite of: From Rob’s English blog:
Grammar Tip 9: despite/in spite of/even though
Remember that only one of these phrases uses ‘of’:
Despite the heavy weather, the barbecue went ahead.
In spite of the heavy weather, the barbecue went ahead.
‘Despite’ is much more commonly used, especially at the start of a sentence.
Also possible here is ‘regardless of’ and (for those formal occasions) ‘notwithstanding’ .
Remember that both ‘despite’ and ‘in spite of’ can also be used with a gerund (-ing):
Despite reading the whole night, I did not finish the book.
In spite of reading the whole night, I did not finish the book.
Once again, ‘despite’ is more commonly used.
Do not use a subject pronoun – I, you, he, she – and a verb straight after these words. Instead, switch to ‘even though’:
Even though I read the whole night, I did not finish the book.
Even though the weather was heavy, the barbecue went ahead.
› basic:Her knowledge is still only rudimentary.› Rudimentary methods, equipment, systems, or body parts are simple and not very well developed:Some unusual fish have rudimentary legs.