In brief Infinitive: to be, an irregular verb and the most frequent in English. Present: three distinct forms: am (I), is (he/she/it), are (you/we/they). Past
In brief Formation: regular verbs + -ed (invariable across persons); irregular verbs must be learnt by heart. Negative: didn’t + base form, without -ed or
In short Present: The verb takes the form have or has in the third person singular. Past: The single form had is used for all
In short Formation: verb stem + -ing (work → working). A few spelling rules: dropping the silent -e, doubling the final consonant, -ie → -y.
In short The main difference: The continuous emphasizes the duration of an action, while the simple emphasizes its result. Unfinished action: We use the continuous
In short Long past action: expresses an action that lasted before another defined moment in the past. Fixed structure: always used with the subject, followed
In short The main role: To express a past action that happened before another past action on a timeline. The basic formula: Subject + auxiliary
In short Main role: An auxiliary verb, often called a helping verb, assists another verb to indicate the tense or form of the sentence. Be: