| 1. | Base Form (Infinitive): | Signal |
| 2. | Simple Past: | Signalled |
| 3. | Past Participle: | Signalled |
| 4. | Present Participle: | Signalling |
| 5. | 3rd Person Singular: | Signals |

Signal past tense
| Signalled |
| Signalled is the past tense of the word signal. |
Signal past participle
| Signalled |
| Signalled is the past participle of the word signal. |
Signal verb forms V1 V2 V3 V4
| Infinitive | Past Simple | Past Participle | Present Participle |
|---|---|---|---|
| Signal | Signalled | Signalled | Signalling |
Conjugation of Signal
| Simple / Indefinite Present Tense |
| I signal. |
| He/She/It signals. |
| You/We/They signal. |
| Simple Past Tense |
| I signalled. |
| He/She/It signalled. |
| You/We/They signalled. |
| Simple Future Tense |
| I will/shall signal. |
| He/She/It will signal. |
| You/We/They will/shall signal. |
| Present Continuous Tense |
| I am signalling. |
| He/She/It is signalling. |
| You/We/They are signalling. |
| Past Continuous Tense |
| I was signalling. |
| He/She/It was signalling. |
| You/We/They were signalling. |
| Future Continuous Tense |
| I will be signalling. |
| He/She/It will be signalling. |
| You/We/They will be signalling. |
| Present Perfect Tense |
| I have signalled. |
| He/She/It has signalled. |
| You/We/They have signalled. |
| Past Perfect Tense |
| I had signalled. |
| He/She/It had signalled. |
| You/We/They had signalled. |
| Future Perfect Tense |
| I will have signalled. |
| He/She/It will have signalled. |
| You/We/They will have signalled. |
| Present Perfect Continuous Tense |
| I have been signalling. |
| He/She/It has been signalling. |
| You/We/They have been signalling. |
| Past Perfect Continuous Tense |
| I had been signalling. |
| He/She/It had been signalling. |
| You/We/They had been signalling. |
| Future Perfect Continuous Tense |
| I will have been signalling. |
| He/She/It will have been signalling. |
| You/We/They will have been signalling. |
More verb past tense