| Present Tense | Past Tense | Future Tense |
|---|---|---|
| I respond | I responded | I shall/will respond |
| We respond | We responded | We shall/will respond |
| You respond | You responded | You will respond |
| He responds | He responded | He will respond |
| She responds | She responded | She will respond |
| It responds | It responded | It will respond |
| They respond | They responded | They will respond |
| Present Continuous | Past Continuous | Future Continuous |
|---|---|---|
| I am responding | I was responding | I shall/will be responding |
| We are responding | We were responding | We shall/will be responding |
| You are responding | You were responding | You will be responding |
| He is responding | He was responding | He will be responding |
| She is responding | She was responding | She will be responding |
| It is responding | It was responding | It will be responding |
| They are responding | They were responding | They will be responding |
| Present Perfect | Past Perfect | Future Perfect |
|---|---|---|
| I have Responded | I had Responded | I shall/will have Responded |
| We have Responded | We had Responded | We shall/will have Responded |
| You have Responded | You had Responded | You will have Responded |
| He has Responded | He had Responded | He will have Responded |
| She has Responded | She had Responded | She will have Responded |
| It has Responded | It had Responded | It will have Responded |
| They have Responded | They had Responded | They will have Responded |
| Present Perfect Continuous | Past Perfect Continuous | Future Perfect Continuous |
|---|---|---|
| I have been responding | I had been responding | I shall/will have been responding |
| We have been responding | We had been responding | We shall/will have been responding |
| You have been responding | You had been responding | You will have been responding |
| He has been responding | He had been responding | He will have been responding |
| She has been responding | She had been responding | She will have been responding |
| It has been responding | It had been responding | It will have been responding |
| They have been responding | They had been responding | They will have been responding |