この駅でおりてもいいです。
- You may get off at this station.

この駅でおりてもいいです。 meaning: You can get off at this station.

The sentence follows a subject-object-verb word order, although the subject is often omitted if it is understood from the context. Particles are crucial in Japanese to indicate the grammatical function of each word. ⚫︎ この (kono): This. This is a demonstrative adjective modifying the noun 駅(eki), meaning "station." ⚫︎ 駅(eki): Station. This is the location. ⚫︎ で(de): Particle indicating location. It marks the place where the action takes place. Here, it indicates "at" or "in" the station. ⚫︎ を is not included in this sentence. ⚫︎ も(mo): Particle meaning "also" or "too." Although it doesn't appear in this sentence, it is used frequently in simple Japanese.

The verb おりる(oriru), meaning "to get off," is conjugated into the -て form and combined with the auxiliary verb. ⚫︎ おりる(oriru): This is the plain form of the verb "to get off." It's a "ru" verb (a verb that ends in -ru and the vowel before -ru is an "e" or an "i"). ⚫︎ おりて(orite): This is the -て form of おりる(oriru). To form the -て form of "ru" verbs, you remove the "-ru" and add "-て" if the preceding vowel is "e" or "i." ⚫︎ This -て form is then combined with もいい to create the meaning of "it is okay to," or "you may." ⚫︎ The potential form itself is not directly in this sentence, but it’s relevant. For "ru" verbs, you drop "-ru" and add "-れる" to create the potential form, e.g., おりられる(orirareru) – "can get off."

The phrase もいいです(mo ii desu) is a common expression to give or ask for permission. ⚫︎ も(mo): Particle meaning "also" or "too." It's used here for emphasis, like "even." ⚫︎ いい(ii): Meaning "good" or "okay." It's an い-adjective. ⚫︎ です(desu): The polite copula (is/am/are). It makes the sentence polite. ⚫︎ もいいです(mo ii desu): Literally, "it is also good," but used to grant permission, meaning "it's okay to" or "you may." It is a fixed expression and is placed at the end of the sentence to show polite form. ⚫︎ Therefore, おりてもいいです(orite mo ii desu) means "It's okay to get off," or "You may get off." ⚫︎ The negative form would be おりてはいけません(orite wa ikemasen), meaning "You must not get off."

Japanese frequently uses fixed expressions that involve specific sentence structures. ⚫︎ Using a location and the particle で(de) is a common pattern to indicate *where* an action takes place. For example, "at the school" would be 学校で(gakkou de). ⚫︎ The action follows. For example, to say "study at the school" you would say 学校で勉強します(gakkou de benkyou shimasu).

Politeness is key in Japanese. This sentence is polite because it uses the polite copula です(desu). ⚫︎ The plain form would be この駅でおりてもいい. The polite form adds です at the end. ⚫︎ Politeness levels can be increased further with honorifics, but this is outside the scope of N5. ⚫︎ The use of polite form is appropriate when speaking to someone you don't know well or someone older than you.