The present continuous expresses an activity that is in progress at the moment of speaking. It began in the recent past, is continuing at present, ...

The present continuous expresses an activity that is in progress at the moment of speaking. It began in the recent past, is continuing at present, and will probably end at some point in the future. Partindo da explanação acerca do presente contínuo, na língua inglesa, e levando em conta que sua formação envolve elementos como be + main verb + ING, descreva três alterações ortográficas que ocorrem com alguns verbos quando é acrescida a regra do ING.