"How...?" vs. "What ... like?"

Solution 1:

When asking for a description of something, you should use the construction "What ... like?"

However, how is a perfectly valid question. It just doesn't ask for a description.

How seeks to learn:

• In what manner or way; by what means: How does this machine work?
• In what state or condition: How is she today?
• To what extent, amount, or degree: How bad was it?
• For what reason or purpose; why: How is it that he left early?
• With what meaning: How should I take that remark?
• By what name: How is she called?
• By what measure; in what units: How do you sell this corn?

etc...

When you ask "How is your new teacher?", you are not asking for a description. Instead, you are asking about her state or condition. The answer would involve adjectives like good, sick, happy, etc.

When you ask "How's the weather?", again, you are technically not asking for a description, but its state or condition. For questions like these, the distinction between "description" and "state" is pedantic, and you shouldn't worry too much about them.

To be more thorough about the "weather" questions:

Asking these questions will almost always get you the same (or similar answer):

• How's the weather?
• What's the weather like?

For example, I live in Southern Oregon, and the weather today is foggy and cold, so I might respond "Foggy and cold." The first question may also solicit "Not great. Foggy and cold." (And this is because how is asking about condition or state, something that what doesn't ask.)

However, if I ask "How's the weather usually in Toronto?" I'm trying to get a sense of weather or not the weather is "good" or "bad" usually, which probably isn't that useful. Instead, I would ask "What's the weather usually like in Toronto?", which would get me a description of the usual weather in Toronto (much more useful).