| Вопросительные слова | Вспомогательный глагол | Подлежащее | Сказуемое |
| | They | were in Spain with their friends in 2015. |
| Were | they | * in Spain with their friends in 2015? |
| When | were | they | in Spain with their friends? |
| Where | were | they | with their friends in 2015? |
| | С кем ...? Обратите внимание! Предлог with останется в конце предложения. |
| Who | were | they | in Spain in 2015 with? |
| Кто ...? Вопрос к подлежащему особый. Вопросительное слово является подлежащим. Порядок слов как в утвердительном предложении. |
| Who | was | in Spain with their friends in 2015? (Кто был ...?) |
| Who, как he, she и it, 3-го лица единственного числа. |