社会人ともなると責任が重くなります。
- Jika sudah menjadi orang dewasa, tanggung jawab menjadi berat.

社会人ともなると責任が重くなります。 meaning: Setelah menjadi orang dewasa yang bekerja (karyawan), tanggung jawab menjadi berat.

Explanation of the first grammar point ⚫︎ ～と is a conjunction (kata sambung) that can indicate a conditional or sequential relationship. It often translates to "when," "if," or "as soon as." ⚫︎ It expresses a natural consequence or expectation. ⚫︎ Often, the second part of the sentence describes a change or a new situation that follows from the first part. ⚫︎ In this sentence, 社会人ともなると uses ～と to show that when someone becomes a working adult, it's a natural consequence that they will have heavier responsibilities. ⚫︎ Examples: * 春になると、暖かくなります。 (Harus musim semi, menjadi hangat.) - When spring comes, it becomes warm. * ボタンを押すと、音が鳴ります。 (Jika menekan tombol, suara akan berbunyi.) - If you press the button, a sound will be made.

Explanation of the second grammar point ⚫︎ なる is a verb meaning "to become." ⚫︎ It is used to describe a change in state or situation. ⚫︎ It can be used with nouns and adjectives. When used with a noun, the noun is followed by the particle に. When it is used with adjective, the sentence pattern is modified according to the adjective form. ⚫︎ In this sentence, 社会人 (working adult) is followed by に and then なる, showing a change: from not being a working adult to becoming one. ⚫︎ Examples: * 医者になります。 (Menjadi dokter.) - I will become a doctor. * 寒くなります。 (Menjadi dingin.) - It will become cold.

Explanation of the third grammar point ⚫︎ 責任 (sekinin) means "responsibility" or "duty". ⚫︎ It's a noun. ⚫︎ In this sentence, it describes the subject of the sentence that will become heavier. ⚫︎ Examples: * 彼の責任です。 (Ini adalah tanggung jawabnya.) - It is his responsibility. * 責任を取る。 (Mengambil tanggung jawab.) - To take responsibility.

Explanation of the fourth grammar point ⚫︎ が is a particle indicating the subject of the sentence. ⚫︎ In this sentence, 責任 (responsibility) is the subject, and が marks it as such. ⚫︎ が can also be used to indicate contrast, but in this sentence, it functions as a subject marker. ⚫︎ Examples: * 私は学生です。 (Saya seorang pelajar.) - I am a student. (私 is the subject, marked by は) * 雨が降っています。 (Hujan sedang turun.) - It's raining. (雨 is the subject, marked by が)

Explanation of the fifth grammar point ⚫︎ 重く (omoku) is the adverbial form of the adjective 重い (omoi), meaning "heavy." It is formed by replacing the final い with く. ⚫︎ なります (narimasu) is the polite form of the verb なる (naru), "to become". ⚫︎ Together, 重くなります (omoku narimasu) means "will become heavy." ⚫︎ The sentence pattern indicates the change in condition or state, in this case, the increasing weight of responsibility. ⚫︎ Examples: * 静かにしてください。 (Harap tenang.) - Please be quiet. (静か adjective, changing the verb.) * 早くなります。 (Menjadi cepat.) - It will become fast.