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