The document discusses the present perfect tense in English. It is used to talk about unfinished actions that began in the past and continue to the present. It does not specify the exact time an action occurred. The present perfect tense uses an auxiliary verb of "have" or "has" plus the main verb in the past participle form. It is used to describe experience over time, accomplishments, uncompleted actions, and multiple actions that occurred at different times in the past. Examples of affirmative, negative, and interrogative sentences in the present perfect tense are provided.

1. Present Perfect Tense
Alumna: Yesica Gutiérrez
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2. Present Perfect
Tense
We use this tense when we want to talk about
unfinished actions that started in the past and
continue to the present and to say that an action
happened at an unspecified time before now. The
exact time is not important.
Grammar
Because the present
perfect is a compound
tense, two verbs are
required: the main verb
and the auxiliary verb.
Auxiliary verb will be: Have
or Has depends of the
subjcet.
Main will be: The action
verb in Past Participle
We use present perfect tense
when:
• Experience
• Change over time
• Accomplishments
• An Uncompleted Action You
Are Expecting
• Multiple Actions at Different
Times

3. Affirmative:
Subject + Auxiliary verb + Main verb in past participle +
Complement.
E.g. He has written a letter to María.
Sentences:
Negative:
Subject + Auxiliary verb + Not + Main verb in past participle +
Complement.
E.g. He has not written a letter to María.
Interrogative:
Wh questions + Auxiliary verb + Subject + Main verb in past
participle + Complement.
E.g. Why has he written a letter to María?