There is no such a thing in the world like panacea that helps you solve all problems relating language learning. For this reason, the aim of this page is an attempt to show you some general basic requirements for anyone who is going to write an English letter ranging from personal contact or whatsoever. I am not a native speaker of English, to be honest. As a consequence, I am not supposed, or well-qualified enough to provide some tips about how I know that this word instead of this word is more appropriate in this context. The three basic requirements presented below will only serve as a general guideline reminding you that you’re on the right track in English letter writing.

1.    Make your point(s) in the first sentence if applicable:

For example: For academic reason: "I am writing to report to you that I have made great progress in the research of ~~"

For other intentions: "Thanks for getting back to me so quickly."  "Please note the following meals for the Summer: ~~" "Just to let you know - we are moving offices next week so our office will be closed from ~~ and will reopen as usual on ~~"

2. Your readers' time are so invaluable that they are needed to be appreciated: Being concise.
Example One:
Hi ~:
Thanks for coming to the meal. Please come to the next one too (lunch on
Saturday 3rd June in XX) and feel free to invite others.

Take care,
~~ (first name)

Example Two:

Hi, everyone!
 
Here's ~~'s photo from last Saturday - enjoy!
 
~~ (first name)

3. Mind your style! In other words, you should have a clear picture of what kind of target readers they are before penning your letter. Style is roughly subdivided into two parts: informal and formal style. Frankly speaking, style is hard to be taught so that I will present three letters I have recently received from native English speakers for the purpose of bettering your judgment on this part.
An obvious informal style of letter of invitation:
Hi folks!

This Friday (16th June) I am gonna party like it's my birthday. The reason being? It is
my birthday! So if you feel like a night on the tear or even just a well earned break
from dissertation work, come on down to the Pear Tree (on west nicolson st.) at 8pm on
Friday for a night of fun and frolicks! (my number's 07962639387 if you can't find it)

I've no idea whose e-mail I don't have here, so if you see that anyone is missing or you
want to bring anyone else along, pass on the invite! The more the merrier!

Oh and one more thing! There is a theme, and the theme is: Summer! and whatever that
means to you... beach parties, surfing, luau's (is that how you spell it?), world cup,
carnivale (ok, I know that's not really summer, but what the hell!) or whatever else it
is that says summer to you! Dress up, dress down, whatever you like!

Hope to see you there!
~~ (first name)

A letter of asking for participation standing between formal and informal style:

Dear All,
I hope you are enjoying your holidays or being buried under a mountain of essays
(whichever may apply). I was hoping you could help me with my Discourse Studies project
by telling me when, if and why you thank you the bus driver before getting of the bus when
using public transport. If you are a visitor to these fair shores, is it soemthing that
is done at home, and if so by whom?

Good luck with the work,
best regards,
~~ (full name)  

A letter of warning from a chief security officer, an absolutely formal style:

In the last few months there has been an increase in thefts of laptop computers within the city of ~~. The ~~ community have not been excluded from this as a number of crimes have taken place where laptops belonging to the ~~ and also those belonging to ~~ have been stolen from various locations. I would urge all members of the ~~ body and staff to lock these items away when not in use and to lock office doors when leaving offices vacant. There is also a trend developing for memory sticks to be stolen and, as ever, mobile phones and digital cameras continue to be targetted. Do not leave these items unattended if working in the public.

Security is a shared responsibility and we must all take responsibilty for our property. The items are of monetary value but the loss of the data they hold may cause major inconvenience if not saved or backed up elesewhere. If someone around you does not look right or feel right then please tell security or a servitor or another member of staff.

~~ (full name)