what is Interrogative Pronouns
Interrogative pronouns are used in asking questions. The pronouns who, what and which are used as interrogative pronouns.
e.g. Who telephoned?
What did you say?
Which is your brother?
a. Direct questions
Interrogative pronouns can be placed at the beginning of a sentence in order to ask a question. Such questions can be referred to as direct questions.
In a direct question, when the interrogative pronoun is the subject of a verb, the verb follows the subject. In the following examples, the verbs are underlined, and the subjects of the verbs are printed in bold type.
e.g. What has happened?
Who has been invited?
In these examples, what is the subject of the verb has happened, and who is the subject of the verb has been invited. The presence of the interrogative pronoun transforms the statement into a question, and a question mark must be used.
When the interrogative pronoun is the object of the verb or the object of a preposition, inverted word order must be used, with the first auxiliary preceding the subject of the verb. In the case of verbs in the Simple Present or Simple Past, the auxiliary do or did must be used.
e.g. What do you mean?
Which did she choose?
What is he doing?
To what can one attribute their success?
In the preceding examples, the subjects you, she, he and one are preceded by the auxiliaries do, did, is and can. In the first three examples, what and which are the objects of the verbs. In the fourth example, what is the object of the preposition to.