| Present Simple - Настоящее время |
| Вопросительная форма | Утвердительная форма | Отрицательная форма |
| Do I doubt? | I doubt | I don't doubt |
| Does he doubt? | He doubts | He doesn't doubt |
| Does she doubt? | She doubts | She doesn't doubt |
| Does it doubt? | It doubts | It doesn't doubt |
| Do you doubt? | You doubt | You don't doubt |
| Do we doubt? | We doubt | We don't doubt |
| Do they doubt? | They doubt | They don't doubt |
| Past Simple - Прощедщее время |
| Вопросительная форма | Утвердительная форма | Отрицательная форма |
| Did I doubt? | I doubted | I didn’t doubt |
| Did he doubt? | He doubted | He didn’t doubt |
| Did she doubt? | She doubted | She didn’t doubt |
| Did it doubt? | It doubted | It didn’t doubt |
| Did we doubt? | We doubted | We didn’t doubt |
| Did you doubt? | You doubted | You didn’t doubt |
| Did they doubt? | They doubted | They didn’t doubt |
| Future Simple - Будущее время |
| Вопросительная форма | Утвердительная форма | Отрицательная форма |
| Will I doubt? | I will doubt | I won’t doubt |
| Will he doubt? | He will doubt | He won’t doubt |
| Will she doubt? | She will doubt | She won’t doubt |
| Will it doubt? | It will doubt | It won’t doubt |
| Will we doubt? | We will doubt | We won’t doubt |
| Will you doubt? | You will doubt | You won’t doubt |
| Will they doubt? | They will doubt | They won’t doubt |
