Present Tense:
* Simple Present: sing (I sing, you sing, he/she/it sings, we sing, you sing, they sing)
* Present Progressive: singing (I am singing, you are singing, he/she/it is singing, we are singing, you are singing, they are singing)
* Present Perfect: have sung/has sung (I have sung, you have sung, he/she/it has sung, we have sung, you have sung, they have sung)
* Present Perfect Progressive: have been singing/has been singing (I have been singing, you have been singing, he/she/it has been singing, we have been singing, you have been singing, they have been singing)
Past Tense:
* Simple Past: sang (I sang, you sang, he/she/it sang, we sang, you sang, they sang)
* Past Progressive: was singing/were singing (I was singing, you were singing, he/she/it was singing, we were singing, you were singing, they were singing)
* Past Perfect: had sung (I had sung, you had sung, he/she/it had sung, we had sung, you had sung, they had sung)
* Past Perfect Progressive: had been singing (I had been singing, you had been singing, he/she/it had been singing, we had been singing, you had been singing, they had been singing)
Future Tense:
* Simple Future: will sing (I will sing, you will sing, he/she/it will sing, we will sing, you will sing, they will sing)
* Future Progressive: will be singing (I will be singing, you will be singing, he/she/it will be singing, we will be singing, you will be singing, they will be singing)
* Future Perfect: will have sung (I will have sung, you will have sung, he/she/it will have sung, we will have sung, you will have sung, they will have sung)
* Future Perfect Progressive: will have been singing (I will have been singing, you will have been singing, he/she/it will have been singing, we will have been singing, you will have been singing, they will have been singing)
Other Forms:
* Infinitive: to sing
* Gerund: singing
* Past Participle: sung
Remember that the verb tense you use depends on the context of the sentence and the specific meaning you want to convey.