するのは (This one also have two particles)(How can I make this combined particles)

するのは　(This one also have two particles)(How can I make this combined particles、It is 

The combination "のは" in Japanese grammar is formed by combining two particles:

 * の (no): This particle acts as a possessive marker or a nominalizer, turning a verb or adjective into a noun.

 * は (wa): This particle marks the topic of a sentence, indicating what the sentence is primarily about.

How to Use "のは"

 * Nominalization:

   * "の" turns a verb or adjective into a noun phrase.

   * Example:

     * 勉強する (benkyō suru) - to study

     * 勉強するのは (benkyō suru no wa) - the act of studying

 * Topic Marker:

   * "は" marks the noun phrase created by "の" as the topic of the sentence.

   * This highlights the action or state described by the verb or adjective.

Examples:

 * 勉強するのは大切です。(Benkyō suru no wa taisetsu desu.) - Studying is important. (The topic is "studying")

 * 行くのは明日です。(Iku no wa ashita desu.) - I'm going tomorrow. (The topic is "going")

 * 食べたいのはラーメンです。(Tabetai no wa rāmen desu.) - I want to eat ramen. (The topic is "what I want to eat")

Key Points:

 * "のは" is often used to emphasize the action or state being discussed.

 * It can be used with various verbs and adjectives to create noun phrases.

 * Understanding the function of "の" and "は" individually is crucial for grasping the meaning and usage of "のは."