Я собираюсь гулять в парке утром.

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Breakdown of Я собираюсь гулять в парке утром.

• парк: the park
• в: in
• гулять: to walk

Questions & Answers about Я собираюсь гулять в парке утром.

What does собираюсь add to the meaning? Why not just say Я буду гулять в парке утром?

Я собираюсь гулять в парке утром literally means I am planning / I intend / I am going to walk in the park in the morning.

• Я буду гулять... = I will walk... (neutral, simple future, just a statement of a future action).
• Я собираюсь гулять... = I am going to walk / I am planning to walk... (emphasizes intention or plan).

So собираюсь adds the nuance that you have a plan or intention, not just a neutral future event.

Why is гулять in the infinitive form and not conjugated, like гуляю?

After собираться (to be going to / to intend), Russian uses the infinitive:

• Я собираюсь гулять. = I’m going to walk / I intend to walk.

This is similar to English want to do, plan to do, like to do, where the second verb is in the infinitive (to do). In Russian:

• Я хочу гулять. – I want to walk.
• Я люблю гулять. – I like to walk.
• Я буду гулять. – I will walk.
• Я собираюсь гулять. – I am going to walk / I intend to walk.

So гулять must stay in the infinitive here.