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| how + adj/adv | asking about extent or degree | see examples below |
| how far | distance | How far is Pattaya from Bangkok? |
| how long | length (time or space) | How long will it take? |
| how many | quantity (countable) | How many cars are there? |
| how much | quantity (uncountable) | How much __________ do you have? |
| how old | age | How old are you? |
| how come (informal) | asking for reason, asking why | How come I can't see her? |