Changing a statement into negative or interrogative and vice versa is called transformation of sentences.

1. Transformation of statement into negative.
She is a teacher. ↔ She is not a teacher.
They are playing football. ↔ They are not playing football.
She reads a book. ↔ She doesn’t read a book.
I have taken your book. ↔ I have not taken your pen.
You went out. ↔ You didn’t go out.
She has beautiful hair ↔ She doesn’t have beautiful hair.
I shall come to your house. ↔ I shall not come to your house.
You will play tennis. ↔ You will not play tennis.
I am writing some letters. ↔ I am not writing any letter.
Open the window. ↔ Don’t open the window.
You have a lot of money. ↔ You do not have a lot of money.
He always goes to school. ↔ He never goes to school.

2. Transformation of statement into interrogative.
(a) Yes/no question
She is a teacher. ↔ Is she a teacher?
They are playing football. ↔ Are they playing football?
She reads a book. ↔ Does she read a book?
I have taken your book. ↔ Have I taken your pen?
You went out. ↔ Did you go out?
She has beautiful hair ↔ Does she have beautiful hair?
I shall come to your house. ↔ Shall I come to your house?
You will play tennis. ↔ Will You play tennis?
I am writing some letters. ↔ Am I writing any letter?
Open the window. ↔ Do you open the window?
You have a lot of money. ↔ Do you have a lot of money?
He always goes to school. ↔ Does he always go to school?

(b) Wh –question
Wh – words
What → things
Where → place
When → time
How → process/quantity
Why → reason/cause
Who → person (subject)
Which → thing(choice)
whom → person (object)
Whose → possessive

She gets up early in the morning. ↔ When does she get up?
They are playing football. ↔ What are they playing?
She reads a book. ↔ Who reads book?
He has taken your book. ↔ What has he done your book?
You went out. ↔ Where did he go?
She has beautiful hair ↔ How kind of hair does she have?
I shall go to your house. ↔ Where shall I go?
Or Where will you go?
You will play tennis. ↔ What will you play?
I am writing some letters to my relatives. ↔ Whom are you writing any letters to?
This is Ram’s house. ↔ Whose house is this?
You have a lot of money. ↔ How much money do you have?
He always goes to school to read. ↔ Why does he always go to school?

Example:

1. Rewrite the following sentence in the form of a question using the question word in brackets.
Example: Kevin is eating an apple. (what)
What is Kevin eating?
(a) School started an hour ago.(when)
(b) I’m going to temple (where)
(c) Raju and Sunita passed the exam (Who)
Answers:
(a) When did school start?
(b) Where are you going?
(c) Who passed the exam?

1. Imagine you have met your friend after a long time. For each of the five questions word are given below. Ask him/her questions using them.
(a) What (b) When (c) Where (d) why (e) How

2. Choose the correct in the brackets to complete the sentences given below.
(a) Rosa didn’t (give/gave) away the doll.
(b) Kim and her roommate (live/lived) in London.
(c) The man does not (sleep/sleeps) on the floor.
(d) Cottages do not always (have/has) green shutter.
(e) She doesn’t (know/knows) the place either.