Provide 15 sentences in Present Progressive and Present Perfect tenses, with examples of 4 forms for each.

Here are 15 sentences in Present Progressive and Present Perfect tenses, along with examples of how to change them into 4 forms.

Present Progressive Sentences:

• She is reading a book.
• They are playing football.
• I am writing an email.
• He is cooking dinner.
• We are watching a movie.
• The birds are singing.
• You are learning English.
• It is raining heavily.

Example of Present Progressive sentence in 4 forms:
Sentence: She is reading a book.

1. Affirmative: She is reading a book.
2. Negative: She is not reading a book.
3. Interrogative: Is she reading a book?
4. Negative Interrogative: Is she not reading a book?

Present Perfect Sentences:

• I have finished my work.
• She has eaten breakfast.
• They have gone home.
• We have visited Paris.
• He has written a letter.
• You have seen that movie.
• The cat has caught a mouse.

Example of Present Perfect sentence in 4 forms:
Sentence: I have finished my work.

1. Affirmative: I have finished my work.
2. Negative: I have not finished my work.
3. Interrogative: Have I finished my work?
4. Negative Interrogative: Have I not finished my work?