I just recently started to learn Japanese and I am a bit confused with some numbers. For example, what is the difference between 七 (なな) and 七つ (ななつ). Is there no difference? Is it just another way of saying it?
-
Apparently you haven't been told about counter words: en.wikipedia.org/wiki/Japanese_counter_word– Earthliŋ ♦Jul 23, 2016 at 9:22
-
@Earthliŋ "Used as part of the indigenous Japanese numbers" Does this mean that it is always used when counting.– a25bedc5-3d09-41b8-82fb-ea6c353d75aeJul 23, 2016 at 9:28
-
When counting objects/days/whatever, yes. Determining the correct counter can be difficult, but つ is a generic counter that may be used to count many inanimate objects, which is why it's usually the first counter for objects people learn. Also see japanese.stackexchange.com/questions/28026/1628.– Earthliŋ ♦Jul 23, 2016 at 9:36
1 Answer
つ is a counter word (for generic inanimate objects), so that
七 (なな) "[the number] seven"
七つ (ななつ) "seven [objects]"
Similarly you have
七日 (なのか) "the seventh [day of the month]"
七本 (ななほん) "seven [longish objects]"
and many many more.
Depending on the counter, the numbers may not be based on the native Japanese numbers (hito, futa, mi, ..., nana, ...), but on the Sino-Japanese numbers (ichi, ni, san, ..., shichi, ...), as in
七時間 (しちじかん) "seven hours"
When the numbers (like 七) count something, you use a counter word. When you talk about the number as a number (e.g. in telephone numbers), you use the number without the counter word.