There are several versions of English used internationally. The two predominant versions are the US and the UK versions of English. Most English speaking countries outside of the US tend to follow the UK grammar rules/spelling. Some Examples of United Kingdom Versions: Burnt Maths Programme Colour (and many other words ending in "our") Aluminium (and many more) Some Examples of United States Versions: Burned Math Program Color (and many other words ending in "or") Aluminum (and many more) There are other small grammatical subtleties and slight spelling differences (such as punctuation after quotation marks), but when you are first learning it probably does not make much difference. Deciding which you should use in the long term simply depends on which you prefer (since English is not your first language). But when traveling or working in an English speaking country, it would be best to use the local version. I hope this helps!

We have two types of verbs. Regular verb and irregular verb. Regular verb ends with "ed" whiles irregular doesn't but changes completly. So burnt could be classify as irregular verb. And burned could be also classify as regular verb. Examples of irregular: Go Went Be Was/were Come Came Become Became Eat Aet Cut Cut Put Put Fall Fell Examples of regual verb: Simple | Past Work Worked Learn Learned Walk Walked Plan Planned Paint Painted Post Posted Share Shared Arrive Arrived Move Moved So you can use burnt or burned as past tense of burn.