| Present Tense | Past Tense | Future Tense |
|---|---|---|
| I back | I backed | I shall/will back |
| We back | We backed | We shall/will back |
| You back | You backed | You will back |
| He backs | He backed | He will back |
| She backs | She backed | She will back |
| It backs | It backed | It will back |
| They back | They backed | They will back |
| Present Continuous | Past Continuous | Future Continuous |
|---|---|---|
| I am backing | I was backing | I shall/will be backing |
| We are backing | We were backing | We shall/will be backing |
| You are backing | You were backing | You will be backing |
| He is backing | He was backing | He will be backing |
| She is backing | She was backing | She will be backing |
| It is backing | It was backing | It will be backing |
| They are backing | They were backing | They will be backing |
| Present Perfect | Past Perfect | Future Perfect |
|---|---|---|
| I have backed | I had backed | I shall/will have backed |
| We have backed | We had backed | We shall/will have backed |
| You have backed | You had backed | You will have backed |
| He has backed | He had backed | He will have backed |
| She has backed | She had backed | She will have backed |
| It has backed | It had backed | It will have backed |
| They have backed | They had backed | They will have backed |
| Present Perfect Continuous | Past Perfect Continuous | Future Perfect Continuous |
|---|---|---|
| I have been backing | I had been backing | I shall/will have been backing |
| We have been backing | We had been backing | We shall/will have been backing |
| You have been backing | You had been backing | You will have been backing |
| He has been backing | He had been backing | He will have been backing |
| She has been backing | She had been backing | She will have been backing |
| It has been backing | It had been backing | It will have been backing |
| They have been backing | They had been backing | They will have been backing |