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Particles #1: Use の and こと to Use a Verb as the Topic of a Japanese Sentence

Updated: Apr 13, 2021


Adding の or こと to the end of a verb nominalizes it—in other words, it turns the verb into a noun. By doing this, you can put a verb in the topic position.

You can add の/こと only to the plain form of a verb, not the polite form.

In general, Japanese speakers tend to use の for this purpose when talking about something subjective and こと when discussing something objective.


Sentence Structure #1

[Verb] の (or こと) は [adjective or noun] です。

[Verb] no (or koto) wa [adjective or noun] desu.

[Verb]ing is [adjective or noun].

In both English and Japanese, you need to change verbs into nouns when using them in certain parts of a sentence (linguists refer to this as nominalization).

In English, you can use a verb as the subject of a sentence after nominalizing it by adding the suffix -ing. In Japanese, you need to nominalize a verb by adding a particle after it (either の or こと) if you want to put it in the topic position of a sentence.

の is usually used when talking about something subjective (e.g., your likes/dislikes). こと is used when discussing something factual.

Note that these particles can be added only to the plain/dictionary forms of verbs. You will sound strange to a native Japanese speaker if you use these after the polite (masu) form of a verb.




Utau no wa muzukashii desu.

Singing is difficult.



Neru koto wa spo–tsu ja nai.

Sleeping is not a sport.


Sentence Structure #2

[Object] を [verb] の (or こと) は [adjective or noun] です。

[Object] o [verb] no (or koto) wa [adjective or noun] desu.

[Doing something] is [adjective or noun].

Sentence Structure #1 can be expanded by using an entire object+verb phrase as the topic of a sentence. Simply precede the verb with the appropriate object and object-marking particle.




Nihongo o benkyousuru no wa sugoku omoshioroi desu.

Studying Japanese is very interesting.



Kyuuka-go, watashi no beddo ni neru koto wa ii.

It's nice to sleep in my bed after a vacation.

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