По утрам дедушка часто ходит на лыжах в парке, даже если вокруг лежат глубокие сугробы.

По утрам means in the mornings / every morning / on mornings in general. It shows a repeated, habitual time.

• по утрам = in the mornings, morning after morning
• утром = in the morning, often referring to a specific morning or just the time of day

So in this sentence, по утрам fits because the action is something дедушка does regularly.

Also, по here takes the dative plural, so утра becomes утрам.

Because ходит is the verb used for repeated, habitual, or non-one-directional movement.

• идёт = is going right now, in one direction
• ходит = goes regularly / goes back and forth / goes as a habit

Since the sentence says часто and describes what дедушка usually does in the mornings, ходит is the correct choice.

Yes. Ходить is imperfective, which is exactly what Russian uses for:

• habitual actions
• repeated actions
• general activities

This sentence is not about one completed trip. It is about дедушка’s routine, so the imperfective verb is natural.

На лыжах means on skis.

Here на is used with the prepositional case, and лыжах is the prepositional plural form of лыжи.

This is a very common fixed expression:

• ходить на лыжах = to go skiing / to travel on skis
• кататься на лыжах = to ski, especially as recreation

A learner might expect some other case because English uses on skis almost like a means of movement, but in Russian this phrase is simply expressed as на лыжах.

Both can be translated as to ski, but there is a slight nuance.

• ходить на лыжах emphasizes moving around on skis
• кататься на лыжах emphasizes skiing as an activity or pastime

In this sentence, ходит на лыжах в парке suggests дедушка regularly goes around the park on skis. It sounds very natural.

В парке means in the park and simply gives the location.

• в парке = in the park
• по парку = around the park / through the park

So в парке answers where?
If you said по парку, you would emphasize the movement around the area of the park itself.

Both can make sense in some contexts, but в парке is a straightforward, neutral choice here.

Даже если means even if.

• если = if
• даже если = even if

This adds the idea that the action still happens despite the condition. So дедушка often skis in the park even if there are deep snowdrifts all around.

It gives the sentence a stronger contrast.

Because даже если вокруг лежат глубокие сугробы is a subordinate clause.

In Russian, subordinate clauses are normally separated by commas, so the comma before даже если is required.

Main clause:

• По утрам дедушка часто ходит на лыжах в парке

Subordinate clause:

• даже если вокруг лежат глубокие сугробы

Russian often uses лежать for things that are lying, spread out, or covering an area.

So вокруг лежат глубокие сугробы literally means something like deep snowdrifts are lying all around.

This sounds natural in Russian. English would usually just say there are deep snowdrifts all around, but Russian prefers a more visual verb here.

Also:

• сугробы is plural
• so the verb is plural too: лежат

Here вокруг means around / all around.

In this sentence it works as an adverb, describing the surroundings:

• вокруг лежат глубокие сугробы = deep snowdrifts lie all around

Russian also uses вокруг as a preposition, for example:

• вокруг дома = around the house

But in your sentence, it stands on its own and means all around.

In Russian, глубокий is commonly used for snow and snowdrifts, just as English also says deep snow.

So:

• глубокий снег = deep snow
• глубокие сугробы = deep snowdrifts

It is completely idiomatic.

Grammatically, глубокие сугробы is nominative plural, because it is the subject of лежат.

Сугроб is a snowdrift or a big pile/bank of snow, especially one formed naturally by wind or accumulated snow.

So глубокие сугробы gives a stronger image than just много снега. It suggests large masses of snow around дедушка.

Not always in the same tone.

Дедушка can mean:

• grandfather
• grandpa

It is a warm, everyday word. In many contexts, grandpa is the most natural English equivalent, though grandfather is also correct depending on style.

Yes, Russian word order is flexible, but the chosen order is very natural.

The sentence starts with the time expression:

• По утрам = in the mornings

Then the subject:

• дедушка

Then frequency and action:

• часто ходит

Then place and manner:

• на лыжах в парке

Then the contrasting subordinate clause:

• даже если вокруг лежат глубокие сугробы

This order sounds smooth and neutral. You could rearrange parts of the sentence, but the emphasis would change.

Because часто ходит is the natural way to say often goes.

Russian adverbs of frequency commonly come before the verb:

• часто ходит = often goes
• редко бывает = rarely is
• иногда приходит = sometimes comes

You might move часто for emphasis in another context, but here its position is standard and natural.