formality vs informality

Helo every body , I 'm glad in taking this course.Great thanks to toresten and his colegues.I’m Dessalegn Dache from Ethiopia,a military man working in one of army coleges.I found this site very interesting and enjoyable.since English is foregn language for me ,I want to know moreabout it .could any one help me in how can I use both formal and informal english ?

Hello Dessalegn Dache,

Many thanks for joining our forum. I think the best place to start for is here: … ing_skills


TOEIC short conversations: Contract revisions[YSaerTTEW443543]