The difference between 半 (bàn), 一半 (yí bàn) and 一个半 (yí ge bàn) in Chinese grammar

Most people learning Mandarin Chinese get a bit confused with the words 半 (bàn), 一半 (yí bàn) and 一个半 (yí ge bàn). They’re all used for talking about halves in one way or another, but the difference between them can be tricky at first.

None of the words we’re explaining here are actually very hard to use. The problem is that they’re similar, and you get interference. In other words, you get them mixed up. To try and help you avoid that with these words, we’ve put together the super-clear guide below.

半 (bàn): half of

To talk about half of something, the structure is:

半 + [measure word] + [noun]

It’s as simple as that. Most often the measure word is the generic 个 (ge), but any measure word can and should be used in that slot. Let’s have a look at some examples for this structure:

Notice how in English you could say “half of” in all those situations, but usually you just drop the word “of”. However, it might be helpful to try and remember the Chinese 半个 as meaning “half of”.

Now let’s have a look at some full example sentences for this structure:

Notice the 半 + measure word structure in each of the sentences above. If a measure word comes after 半, then it means “half of” or “half a”. That makes it different to the other two words described below.

一半 (yí bàn): a half

一半 is used without a measure word at all. Always remember that you can’t put a measure word before or after 一半. There isn’t a general structure for using 一半, because it’s more of a standalone word meaning “a half” or “one half”. Let’s have a look at some example sentences for 一半:

Hopefully you can see that it’s easier to think of 一半 as a vocabulary item than a structure. This makes it different to 半 and 一个半, which you might want to think of as being more structural.

一个半 (yí ge bàn): one and a half

Finally, we come to 一个半 which means one and a half. The structure for this is:

一个半 + [noun]

You could think of 一个半 as being like 一个 (one) plus 半 (half), so altogether it makes one and a half. Also notice that it contains a measure word, so you don’t add any more measure words to this structure! The 个 shown here can of course be replaced with any appropriate measure word.

Let’s have a look at some example sentences for 一个半 (plus the same structure with other measure words):

Hopefully you can see the 一 + measure word + 半 structure in each of the sentences above.

The difference between the three

Now it’s time for a quick summary of the difference between 半, 一半 and 一个半 in Chinese grammar.

• 半
  • “half of” or “half a”
  • 半 + [measure word] + [noun]
• 一半
  • “a half” or “one half”
  • a standalone word
• 一个半
  • “one and a half”
  • 一 + [measure word] + 半

If you have any questions or suggestions, please share them in the comments at the end of the page.