Do we really know more about space than the deep ocean? There's still a lot we don't know about the world. A thousand years ago, we thought we could literally sail off the edge of the planet. Good thing we're quick learners. But while space may be the final frontier, the ocean may be the greater mystery. Want to know why giant ships can float, how your earbuds make music, what graphene is, or how windows can clean themselves? You've come to the right place! Here you'll find simple explanations you can really understand—hurrah! Hard stuff. made simple! We use “do” to describe the accomplishment of action, and we use “does” to refer to the accomplishment by someone or something else. These sentences all refer to either of these functions. Discover which is correct: How does it work? or How it works? in our easy-to-understand guide! Learn the difference to enhance your English skills. (old-fashioned) used as a formal greeting when you meet somebody for the first time. The usual reply is also How do you do? I've often seen how's used as short for how is - such as How's your wife feeling? or How's the weather where you are? I'm pretty sure the above is grammatically correct. However, it's also common to use how's as short for how does , such as How's it feel to be a student? how are things? informal (also how's everything?); (also how's it going?) I haven't seen you for ages, Carol. How are things? how do you mean? I think we need to reconsider our position. It's amazing how they completed the bridge so quickly. Noun the environmental activist eagerly launched into an explanation of the hows and whys of developing renewable energy sources. Examples are automatically compiled from online sources to show current usage. How in indirect questions We often use how with verbs such as tell, wonder and know in indirect questions: I just don’t know how she manages to cook so well in such a small kitchen. I wonder how they do that. Remember, “how do” is for plural subjects, and “how does” is for singular subjects. Practice using these phrases in your everyday conversations to improve your English language skills.