Present Perfect and Present Perfect Continuous Tenses: Usage and Examples, Apuntes de Inglés Técnico

¡Descarga Present Perfect and Present Perfect Continuous Tenses: Usage and Examples y más Apuntes en PDF de Inglés Técnico solo en Docsity! Unit 3 Present Perfect We use it 1. To talk about past experiences Affirmative sentence: Subject + have / has + main verb in past participle + … I have seen that old film. Have you ever been in Paris? She has used this computer many times. Interrogative sentence: Auxiliary + Subject + main verb in past participle + … Have you seen that old film? Has she used this computer many times? Negative sentences: Subject + auxiliary+ not + main verb in past participle + … I have not seen that old film. She has not used this computer many times. 2. To talk about changes or new information Affirmative sentences: Subject + have / has + main verb in past participle + … He has bought an expensive car. Interrogative sentence: Auxiliary + Subject + main verb in past participle + … Has he bought an expensive car? Negative sentences: Subject + auxiliary+ not + main verb in past participle + … He has not bought an expensive car. 3. To talk about actions that started in the past but are still going on: Affirmative sentence: Subject + have / has + main verb in past participle + … They have worked here for a long time. Interrogative sentence: Auxiliary + Subject + main verb in past participle + … Have they worked here for a long time? Negative sentences: Subject + auxiliary + not+ main verb in past participle + … They have not worked here for a long time. 4. To talk about unfinished actions: Negative sentences: Subject + auxiliary + not+ main verb in past participle + … The rain has not stopped. More information: https://www.youtube.com/watch?v=6ATj9Do_RL8 Present perfect continuous We use it: 1. To talk about actions that started in the past and has just ended Affirmative sentence: Subject + auxiliary + been + main verb in gerund + … We have been studying all week. Interrogative sentence: Auxiliary + subject + been + main verb in gerund + … Have we been studying all week? Negative sentence: Subject + auxiliary + not + been + main verb in gerund + … We have not been studying all week. 2. To talk about actions and emphasize the durations of the process Affirmative sentence: Subject + auxiliary + been + main verb in gerund + … She has been working very hard this month. Interrogative sentence: Auxiliary + subject + been + main verb in gerund + … Has she been working very hard this month? Negative sentence: Subject + auxiliary + not + been + main verb in gerund + … She has not been working very hard this month. More information: https://www.youtube.com/watch?v=5CQx-bfMCxg Prepositions 1. JUST: recien -afirmativo-: They have just arrived. 2- ALREADY: ya –afirmativo-: They have already arrived.