| Type of Question | Word Order |
| The interrogative word is the | Subject precedes verb. Examples: |
| subject of the verb, or modifies | Who told her? |
| the subject of the verb | Which boy did it? |
| | |
| The interrogative word is | Subject follows the first auxiliary: |
| the object of a verb or | What has he done? |
| preposition, or modifies the | To whom shall we send it? |
| object of a verb or preposition | Which questions did she answer? |
| | For which child did you buy it? |
| | |
| The verb to be is accompanied | The verb to be precedes its complement: |
| by a noun or pronoun complement | Who are their friends? |
| | What was that?
|
| | What time is it? |
| | Which book was it? |
| | Which is the right answer? |
| Type of Question | Word Order |
| In all cases | Subject precedes verb. Examples: |
| | I wonder who told her. |
| | You asked which boy did it. |
| | She wants to know what he has done. |
| | He wonders to whom we shall send it. |
| | I wonder which questions she answered. |
| | Please tell me for which child you bought it. |
| | |
| The verb to be is accompanied | The verb to be usually follows |
| by a noun or pronoun complement | its complement. Examples: |
| | He will ask who their friends are. |
| | I wonder what that was. |
| | Do you know what time it is? |
| | Please tell me which book it was. |
| | |
| | However, in the case of which, |
| | the verb to be often precedes a |
| | noun complement. For example: |
| | I wonder which is the right answer. |