1) There are two types of interrogative sentences: those starting with a helping verb and those starting with a wh-word. Sentences starting with a helping verb only allow for a yes/no answer while wh-word starting sentences provide additional information. 2) To change a sentence from active to passive voice requires three steps: identifying the subject, verb, and object, switching the subject and object positions, and changing the verb to an appropriate passive form using a helping verb or auxiliary. 3) An example is provided of changing the active voice sentence "Did she recognize you?" to the passive voice "Were you recognized by her?".

1. Active voice and Passive voice
In interrogative sentence

2. 1] Assertive sentence
3] Orderly / Imperative sentence
4] Exclamatory sentence
2] Interrogative sentence

3.  There is 2 type of interrogative sentence.
1] The sentence is start from helping verb.
2] The sentence is start from Wh-words.
• If you start the sentence from the helping verb that time
you got the answer only Yes/No. Ex:- Are you playing
chess ?
 And when your sentence is started from the Wh-word that
time you got additional information Ex:- What are you
doing?
Helping verb Wh-words
Is / am / are When , Where
Was / were What , Who
do / does / did Whom , Which
Shall / will

4.  How to change the voice ?
 1st step :- find out the subject , verb & object from the
sentence.
Ex:- Are you playing chess ?
(subject) (verb) (object)
 2nd Step
(Became)
Subject Object
Object Subject
Helping verb Helping verb + being
To have To have + been
Modal auxiliary Modal auxiliary + be + V3 + by
+ Subject

5.  Active voice :- Did she recognized you ?
Passive Voice :- Were you recognized by her ?