Genki Grammar #82: Mastering “Three Times a Week”

Illustration showing a cycle with an hourglass in the center, surrounded by symbols representing activities like studying, hiking, and cleaning. This image represents the structure "(period) に (frequency)" used to express how often activities occur in a given time period.
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Introduction

In Japanese, you can describe how often you do something by using a specific structure. This is useful when you want to talk about routines or how frequently certain events happen. In this post, we will learn how to express frequency over a period of time.

What It Means

To describe how often something happens, you use the structure “(period) に (frequency).” This translates to “X times per period” in English. It helps you communicate routines and habits clearly.

When You Use It

You use this structure when you want to say how many times something happens within a certain period, like once a week or twice a month.

Examples

Let’s look at some examples to understand how this works:

A
A

1週間に何回掃除をしますか。
(Isshuukan ni nankai souji o shimasu ka?)
How many times a week do you clean?

B
B

私は1週間に1回掃除をします。
(Watashi wa isshuukan ni ikkai souji o shimasu.)
I clean once a week.

1日3時間ぐらい日本語を勉強します。
(Ichinichi sanjikan gurai nihongo o benkyou shimasu.)
I study Japanese for about 3 hours a day.

1か月に一、二回ハイキングします。
(Ikkagetsu ni ichi, ni kai haikingu shimasu.)
I hike once or twice a month.

Note

Remember that the pattern is “(period) に (frequency).” This structure can be used for various activities, such as studying, exercising, or any other regular event. The period could be a day, week, month, or year, and the frequency can vary depending on the activity.

Conclusion

Mastering how to express frequency in Japanese will help you talk about your routines and habits more naturally.

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