Expo present perfect [Copia]

Expo present perfect [Copia]

Published on 10 February 2022
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Transcript
00:02
By Santiago Cañizares and Luis Felipe Cuéllar
00:02
Welcome to our video
00:06
Lesson 1: Present perfect
00:12
What is present perfect ?
00:12
We use it to talk about events that started in the past and are somehow connected to the present.To create the present perfect tense of any verb, you will combine the present tense of the verb "to have" plus the past participle of the main verb of the sentence. The past participle of a regular verb is the base word plus –ed. One example of this tense is: "have jumped. " "Have" is the present tense and "jumped" is the past participle.
00:18
Basic Structure
00:19
To begin with, we tell you that the essential structure of this verb tense is: Subject + auxiliary HAVE or HAS + main verb (past participle)(-ed) + complement. Now we'll explain it in additional detail: 1. Auxiliary HAS and HAVE: For this  tense it's always necessary to use the auxiliary HAVE. during this context, this auxiliary doesn't mean HAVE but HAVE..
00:24
Positive - Negative- Interrogation way
00:25
Affirmative: we use the HAVE form of the auxiliary. They have bought the movie Negative: we can use the long form (HAVE NOT) or the short one (HAVEN'T). I haven't swum in a river Interrogative and short answer: we use HAVE before the subject. Have you slept for more than 3 hours? Yes, I have or No, I haven't.
00:33
Thanks for your attention