| Present Tense | Past Tense | Future Tense |
|---|---|---|
| I happen | I happened | I shall/will happen |
| We happen | We happened | We shall/will happen |
| You happen | You happened | You will happen |
| He happens | He happened | He will happen |
| She happens | She happened | She will happen |
| It happens | It happened | It will happen |
| They happen | They happened | They will happen |
| Present Continuous | Past Continuous | Future Continuous |
|---|---|---|
| I am happening | I was happening | I shall/will be happening |
| We are happening | We were happening | We shall/will be happening |
| You are happening | You were happening | You will be happening |
| He is happening | He was happening | He will be happening |
| She is happening | She was happening | She will be happening |
| It is happening | It was happening | It will be happening |
| They are happening | They were happening | They will be happening |
| Present Perfect | Past Perfect | Future Perfect |
|---|---|---|
| I have happened | I had happened | I shall/will have happened |
| We have happened | We had happened | We shall/will have happened |
| You have happened | You had happened | You will have happened |
| He has happened | He had happened | He will have happened |
| She has happened | She had happened | She will have happened |
| It has happened | It had happened | It will have happened |
| They have happened | They had happened | They will have happened |
| Present Perfect Continuous | Past Perfect Continuous | Future Perfect Continuous |
|---|---|---|
| I have been happening | I had been happening | I shall/will have been happening |
| We have been happening | We had been happening | We shall/will have been happening |
| You have been happening | You had been happening | You will have been happening |
| He has been happening | He had been happening | He will have been happening |
| She has been happening | She had been happening | She will have been happening |
| It has been happening | It had been happening | It will have been happening |
| They have been happening | They had been happening | They will have been happening |