The document provides examples of how to form sentences in the present perfect tense in English, including affirmative, negative, and question forms. It shows that the affirmative uses the subject plus the verbs "have/has" plus the past participle, the negative uses "haven't/hasn't", and questions can be formed by placing "have/has" before the subject and past participle or by using question words. Short answers are also formed using "yes/no" and "have/hasn't".

1. PRESENT PERFECT FORM & EXAMPLES

2. AFFIRMATIVE SUBJECT + HAVE/ HAS + P.PARTICIPLE.

3. SHE HAS STUDIED ENGLISH .

4. NEGATIVE SUBJECT + HAVEN'T/HASN'T +

5. P.PARTICIPLE

6. I HAVEN'T PAINTED MY HOUSE

7. QUESTIONS HAVE / HAS + SUBJECT+ P.PARTICIPLE?

8. HAS ALFRED PASSED HIS EXAM?

9. SHORT ANSWERS YES, I HAVE / YES, SHE HAS.

10. NO, I HAVEN'T / NO, SHE HASN´T

11. HAS TOM PHONED? YES, HE HAS.