Learn How to Conjugate the Japanese Verb "Suru"

One of the most common irregular verbs used in the Japanese language is "suru", which, when translated into English, means "to do." 

Conjugation Table

Conjugation of the irregular Japanese verb "suru" into present tense, past tense, conditional, imperative, and more:

suru (to do)

Sentence Examples

A few sentence examples using "suru": 

To Complete an Action

The verb "suru" has many commonly-used applications. While it means "to do" on its own, with the addition of an adjective or depending upon the situation, it can take on a number of different meanings from describing the senses to making a decision to accompanying loan words. 

Suru is used in phrases conveying execution of an action. The phrase structure: adverb form of I-adjective + suru . 

To change I-adjective to adverb form, replace the final ~i with ~ku. (e.g. ookii ---> ookiku)

A sentence example of "suru" used to convey a completed action: 

Terebi no oto o ookiku shita.
テレビの音を大きくした｡

I turned up the volume of the TV.

Adverb form of Na-adjective + suru
To change Na-adjective to adverb form, replace the final ~na with ~ni:(e.g. kireina ---> kireini):

Heya o kireini suru.
部屋をきれいにする｡

I'm cleaning the room.

To Decide

"Suru" can be used to exemplify making a decision from several different options: 

To Price

When accompanied by phrases indicating prices, it means "cost":

Kono kaban wa gosen en shimashita.
このかばんは五千円しました｡

This bag cost 5,000 yen.

The Senses

"Suru" can be used when the verb of the sentence involves one of the 5 senses of sight, smell, sound, touch, or taste:

Loan Word + Suru

Loan words are words adopted from another language phonetically. In Japanese, loan words are written using characters which sound similar to the original word. Loan words are often combined with "suru" to change them into verbs:

Noun (of Chinese origin) + Suru

When combined with nouns of Chinese origin, "suru" turns the noun into a verb:

Note the particle "o" can be used as an object particle after a noun. (e.g. "benkyou o suru," "denwa o suru") There is no difference in meaning with or without "o."

Adverb or Onomatopoetic expression + Suru

Adverbs or onomatopoeic expressions combined with " suru" become verbs:

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