Remember the basic rules as mentioned in the previous pages are same. They are fully applied in the interrogative sentences too. Interrogative sentences are of two types. One is the interrogatives with auxiliaries at the beginning and other are the interrogatives with who, where, what, when, how etc. No question mark is used in Indirect Speech.
Modal Operators are defined in the previous lessons. They are the operators which have only one or two forms. Remember, the basic rules for narration are same. All the Modal Operators, which have two forms, are converted into past tense whenever they are in Present Tense in the direct speech. It means that all the operators of the first form are converted into 2nd form.