The use of who, what and which

How

a. How can express means or manner.

How do you open this bottle? (You open this bottle somehow.)

How did the children behave? (The children behaved well/badly.)

b.When it expresses degree, how can come before an adjective or adverb.

How wide is the river? (20 metres/30 metres wide?)

How soon can you let me know? (very soon/quite soon?)

For question phrases with how

c. We also use how as an adjective or adverb in friendly enquiries about someone's

well-being, enjoyment or progress.

How are you? ~ Fine, thanks.

How did you like the party?— Oh, it was great.

How are you getting on at college? ~ Fine, thanks. I'm enjoying it.

NOTE

What... like? asks about quality. Sometimes it has a very similar meaning to How...?

How was the film?/ What was the film like?

But What... like? does not refer to well-being.

How's your brother? ~ Oh, he's fine, thanks.

What's your brother like? ~ Well, he's much quieter than I am.

What does your brother look like? ~ He's taller than me, and he's got dark hair

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