1) In present perfect tense we use the verb a) In the base form b) In the past participle c) In the gerund form. 2) We use the verb in the past participle a) In affirmative sentences b) In negative and interrogative sentences c) In affirmative, negative and interrogative sentences. 3) Sentences in the present perfect always take a) Has + past parriciple b) Have + pastparticiple c) Have or has + past participle 4) In questions we use the structure: a) Have/has + subject + verb in the Past Participle b) Verb in the Past Participle + subject + complement c) Did + subject + verb in the Past participle 5) We use present perfect to talk about... a) something that is happening now b) a period of time from the past until now c) the present result of a past action d) actions at a specific moment in the past e) unfinished actions

Present Perfect: rules

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