1. Form To form the continuous past uses the auxiliary verb "to be" and the gerund (infinitive + "-ing") of the verb. The auxiliary verb "to be" is in the past simple, but keep in mind that "to be" is an irregular verb.
2. FORM: To form the simple past with regular verbs, we use the infinitive and add the ending "-ed". The form is the same for all people (I, you, he, she, it, we, they).
3. SIMPLE PRESENT
3.1. Form To conjugate the simple present we use the infinitive for the subjects "I", "you", "we" and "they" and for the third persons "he", "she" and "it", we add a "-s" to the End of the verb
4. PRESENT PROGRESSIVE
4.1. Form (Forma) Para formar el presente continuo se utiliza el verbo auxiliar “to be” y el gerundio (infinitivo + “-ing”) del verbo.
7. Uses (Uses) 1. The continuous past is used for a long action that was interrupted in the past. The action that is interrupted is in continuous past and the action that causes the interruption is in simple past. "When" and "while" indicate the use of the simple and continuous past. In general, we use the simple past directly after "when" and the past continuous after "while".
9. Uses (Uses) 1. The present simple is used to talk about things that happen regularly. Unlike with Spanish, the present simple is not used to talk about something that is happening at the moment in which we speak.
11. Uses (Uses) 1. The present continuous is used to talk about something that is happening at the moment in which we speak.
12. PRESENT PERFECT
12.1. Form To form the perfect present, the auxiliary verb "to have" is used in the present and the past participle of the verb. For regular verbs, the past participle is the simple form of the past. See the lesson on the simple past for more information on how to form the past.
13. PAST CONTINUOUS
14. Uses 1. The simple past is used to speak of a concrete action that began and ended in the past. In this case it is equivalent to the Spanish indefinite past tense. Generally, we use it with adverbs of time like "last year", "yesterday", "last night" ...
17. Uses (Uses) The perfect present is used for actions that occurred in a non-concrete time before now. The specific time is not important. Therefore, we do not usually use specific time expressions ("this morning", "yesterday", "last year" ...) with the perfect present. You can use the perfect present with non-concrete time expressions ("never", "ever", "many times", "for", "since", "already", "yet" ...).
18. GOING TO
19. Structure (Estructura) 1. Affirmative Sentences (Frases afirmativas) Sujeto + verbo auxiliar (to be) + “going to” + verbo principal. 2. Negative Sentences (Frases negativas) Sujeto + verbo auxiliar (to be) + “not” + “going to” + verbo principal. 3. Interrogative Sentences (Frases interrogativas) Verbo auxiliar (to be) + sujeto + “going to” + verbo principal.
20. "Going" is used for plans. It indicates the intention to do something.
