The future progressive presents an action that will be in progress at a future moment. It is used to talk about what someone will be doing then, such as a plan, a prediction, or an assumption. In Spanish, this form exists and is clear, but in many contexts the simple future or the present is preferred, so its use is not always the most frequent option.

The future progressive is formed with the simple future of estar and a gerund. The basic structure is subject plus estar in the future plus the gerund. It can also appear without an explicit subject when the context already indicates who performs the action.

To form this periphrasis, you need to conjugate estar in the simple future for each person. All forms preserve the stem change estar to estaré, estarás and the other regular future forms. These forms serve the same in affirmative, negative and interrogative sentences.

Many verbs form the gerund with endings -ando and -iendo. Verbs ending in -ar use -ando and verbs ending in -er or -ir use -iendo. These gerunds combine with estar in the future to create the future progressive.

Some frequent gerunds are irregular or show spelling and vowel changes. These forms should be learned as part of the normal periphrasis. They are common in the real usage of the future progressive.

In affirmative sentences, the most natural order is estar in the future followed by the gerund. In negatives, it is not usually placed before estar. In questions, the periphrasis keeps its core together, although the subject can go before or after depending on style and communicative intent.

This form focuses on an action as a process at a future moment, not as a finished fact. It can refer to a concrete instant or to a planned period. It can also express a conjecture about what will be happening, although in this use some speakers prefer other future forms depending on region or situation.

Now you can talk about actions that will be in progress at a moment in the future. You can form the future progressive with estar in the future and a gerund, use regular and common irregular gerunds, and recognize their normal order in affirmative, negative, and interrogative sentences. You can also understand that, although this periphrasis is correct, its frequency varies depending on context and speakers' preferences.