Translation guide
In English, a gerund is a verb form ending in -ing that functions as a noun. Japanese does not have a direct equivalent, but there are several ways to express similar meanings depending on the context.
To talk about an action as a thing or concept, like 'Swimming is fun' or 'I like reading'.
This is the most common way to turn a verb into a noun. It is neutral and can be used in many contexts.
泳ぐことは楽しいです。
Swimming is fun.
本を読むことが好きです。
I like reading books.
This is more conversational and often used for immediate or concrete actions. It can sound more natural in casual speech.
When a gerund follows another verb, as in 'I enjoy cooking' or 'Stop talking'.
Use こと or の to nominalize the verb, then add the appropriate particle and main verb. こと is more formal, の more casual.
料理をすることが好きです。
I like cooking.
話すのをやめてください。
Please stop talking.
For simultaneous actions, like 'walking while eating', use the stem form + ながら. This is not a direct gerund but covers some -ing uses.
歩きながら食べる。
Eating while walking.
When the gerund is the topic or subject, like 'Learning Japanese is difficult'.
Use のは to mark the nominalized verb as the topic. This is common in both spoken and written Japanese.
日本語を勉強するのは難しいです。
Learning Japanese is difficult.
Using ことが is slightly more formal and often used in written language or formal speech.
日本語を勉強することが大切です。
Learning Japanese is important.
Expressing 'for doing' as in 'a knife for cutting' or 'I came to see you'.
This pattern means 'for the purpose of doing'. It is used to describe tools, opportunities, etc.
切るためのナイフ
a knife for cutting
Use the verb stem + に to indicate the purpose of going, coming, etc.
あなたに会いに来ました。
I came to see you.
When the English gerund is part of a continuous tense, like 'I am reading'.
This is the standard way to express ongoing actions. Note that this is not a gerund but a different grammatical structure.
本を読んでいます。
I am reading a book.
Both こと and の nominalize verbs, but こと is more abstract and formal, while の is more concrete and conversational. こと is often used in written language, rules, and fixed expressions. の is preferred for immediate, sensory, or personal experiences. Some verbs only take こと (e.g., 話すことができる) or の (e.g., 見るのが好き).
彼が来るのを待っている。
I'm waiting for him to come.
彼が来ることを知っている。
I know that he is coming.
English gerunds and present participles both end in -ing, but they have different functions. Japanese does not have a single equivalent. Always consider the role of the -ing word in the sentence before choosing a Japanese pattern.