This document discusses the present continuous tense in English. It provides the forms for the affirmative, negative, and interrogative structures using the present tense of "to be" plus the verb root plus "-ing". It notes some orthographic rules for adding "-ing" such as doubling the final consonant for short verbs ending in a consonant-vowel-consonant sequence. Exceptions are provided for verbs ending in "e" and those ending in "ie" or having an accent on the first syllable.