Перед поездкой я планирую путешествие и проверяю паспорт.

Before the trip, I plan the journey and check my passport.

Breakdown of Перед поездкой я планирую путешествие и проверяю паспорт.

• я: I
• и: and
• поездка: the trip
• перед: before
• планировать: to plan
• паспорт: the passport
• проверять: to check
• путешествие: travel

Questions & Answers about Перед поездкой я планирую путешествие и проверяю паспорт.

Why does Перед поездкой use поездкой (instrumental case) instead of something like nominative or genitive?

The preposition перед (before, in front of) requires the instrumental case.
So поездка → поездкой is instrumental singular: перед поездкой = before the trip.
This is a fixed government pattern: перед + instrumental.

What is the difference between поездка and путешествие here? Aren’t they both travel?

They overlap, but they’re not identical:

• поездка = a trip/ride/journey, often more concrete and bounded (a business trip, a weekend trip, going somewhere).
• путешествие = a travel journey, often longer/more “travel/adventure” flavored.

In this sentence, it’s natural to say: before the trip (поездка) I plan the journey/travel (путешествие). In real speech, many people would also keep them consistent, e.g. Перед поездкой я планирую поездку...

Why is there no article (a/the) before поездкой, путешествие, or паспорт?

Russian has no articles. Definiteness/indefiniteness is usually inferred from context.
If you need to make something more specific, Russian uses other tools (word order, demonstratives like этот, context).

What tense is used in я планирую and проверяю? Is it present or future?

Both are present tense forms of imperfective verbs:

• планировать → планирую
• проверять → проверяю

In context, present imperfective can describe:

• a habitual action (what you generally do before trips), or
• a current routine (what you are doing as part of preparation).

If this is about a specific upcoming trip, should it be future tense instead?

It depends on nuance.

• Imperfective present (планирую, проверяю) often sounds like a general routine or a “preparation process.”
• For a one-time sequence right before a particular trip, Russian often uses perfective future:
  • Перед поездкой я спланирую путешествие и проверю паспорт. That sounds more like I will (get it done) before the trip.

Why are these verbs imperfective: планирую and проверяю? What would the perfective forms be?

Imperfective highlights the process / regularity:

• планировать (impf.) → rough perfective is often спланировать (pf.)
• проверять (impf.) → perfective проверить (pf.)

So you get pairs like:

• я планирую (I plan / I’m planning) vs я спланирую (I will plan, finish planning)
• я проверяю (I check / I’m checking) vs я проверю (I will check, complete the check)

Why does Russian include я? Can it be omitted?

Yes, я can often be omitted because the verb ending already shows the subject:

• Планирую путешествие и проверяю паспорт. is grammatical.

Including я can add emphasis/contrast (as in I do this, not someone else) or just sound more explicit.

Is the word order fixed? Could it be rearranged?

Russian word order is flexible, and changes mainly affect emphasis:

• Neutral: Перед поездкой я планирую путешествие и проверяю паспорт.
• More focus on time: Я перед поездкой планирую путешествие и проверяю паспорт.
• More focus on what you do: Путешествие я планирую перед поездкой и проверяю паспорт. (more contrastive/emphatic)

The neutral version is the most natural in everyday writing/speech.

Why is it планирую путешествие (accusative) and not another case?

Because планировать normally takes a direct object in the accusative case:
планировать (что?) путешествие.

Here путешествие is neuter inanimate, so accusative looks the same as nominative: путешествие.

Why is it проверяю паспорт—how do I know it’s accusative if it looks like nominative?

For many masculine inanimate nouns, nominative = accusative in form:

• паспорт (nom.) / паспорт (acc.)

You know it’s accusative because it’s the direct object of проверяю:
проверять (что?) паспорт.

Could this mean checking “the passport” as in any passport, or specifically “my passport”?

By default, it’s understood as my passport from context (a traveler typically checks their own).
If you want to be explicit, Russian can say:

• ...проверяю свой паспорт = I check my passport.

Is a comma needed before и here?

No comma is needed because it’s a simple coordination of two verbs with the same subject (я) and one shared time phrase (Перед поездкой):
я планирую ... и проверяю ...
A comma would be used only if there were separate clauses with their own subjects, or a different structure that requires it.