The present simple tense is the simplest verb tense in English. It is used to talk about facts, habits, and schedules. The verb takes its base form for all subjects except the third person singular, which takes an -s ending. There are some exceptions for verbs ending in consonant-y, ch, sh, x or o, which take -es instead of -s. The present simple is formed by using the base verb form along with the subject. Questions are formed using auxiliary verbs like "do" and "does" along with the base verb form.