Verbs Forms and Tenses

• Infinitive or present - is the base form of a verb, preceded by TO
• Past - the simplest form of a verb, it is used to show action that has already taken place.
• Past participle - is the form of a verb takes when it is accompanied by an auxiliary verb to show complex past tense form.
• Active verbs - tell what the subject does
• Passive verbs - tell what is done by the subject
• Regular verbs - used to form the past tense by adding suffix -d and -ed.
• Irregular verbs - The past tense for this verbs is formed by changing internally.
• Verb tenses - are used to show time, tells when events happen, happened, or will happen.
• Present tense - express an action that is repeated or ongoing. It can also express an action that is happening at this moment.
• Past tense - action that has already happened. It is formed by adding -ed or -d to the base form.
• Future tense - action that will take place in the future. It is formed by adding will to the base form.
• present perfect tense - action that took place at some unspecified time in the past, began in the past and continues in the present.
• present perfect - has or have
• past perfect tense - action in the past began and ended before another action in the past started.
• past perfect - had
• future perfect tense - action in the future will begin and end before another event in the future starts.
• future perfect - will have
• present progressive tense - ongoing events that is happening at the moment of speaking or writing.
• present progressive - am, is, are + ing
• past progressive tense - past event that was happening when another event occurred.
• past progressive - was or were + ing
• future progressive tense - ongoing or continuous event that will take a place in the future.
• future progressive - will be or shall be + ing
• present perfect progressive - show an event that began in the past, continues in the present, and may continue in the future.
• Present perfect progressive - has been or have been + ing
• Past perfect progressive - had been + ing
• Past perfect progressive - ongoing events that was completed before another past event.
• Future perfect progressive - will have been + ing
• Future perfect progressive - ongoing event that will happen before a specified future time.