Do you know what it is? This one is not grammatical (except for an unusual situation described below): Do you know what is it? The key to understanding this is to see that what it is is not a question. It's just the object of know. What is it? is a question, but there's only one question here, not a question within a question.

Please let me know if there is any problem. Please let me know if there are any problems. These sentences work. In the first, the form "is" agrees with its singular subject. In the second, the form "are" agrees with its plural subject. If there is any scooter …

2015年2月9日 · How would I know how much money she makes? How would I know if your cat is psychic? You can't say "How do I know?" in this sense. The conditional mood is necessary because the question is based on an implied hypothesis which you are saying is false: you are implying that you don't know and can't know.

If the intention is to convey that I now know something that I didn't know until about two minutes ago, neither of OP's suggestions are appropriate. 1: I can't say exactly what's wrong with Jack - I just know that I don't like him. 2: Jill says Jack is a convicted child molester - I just knew there was something wrong with him.

2020年5月8日 · What happens if the YouTube video gets deleted? This answer becomes totally worthless. We wouldn't even know the title of the video nor the name of the person (teacher ?) explaining. So while this answer may have a useful link–I haven't seen the video–I'm downvoting because it doesn't explain anything and lacks fundamental information.

What is the difference between once I receive it and once received? Ex. I will send the picture to you once I receive it from John. I will send the picture to you once received.

2020年12月20日 · This version asserts that (one of) the best-known characteristics of District X is the fact of it being the most dangerous area - often with the strong implication that if it weren't so dangerous, most people wouldn't even know of the existence of District X.

I'd like to know whether is or was should be used in the following: Bruce Lee is / was known as a kungfu master. Since he is dead, I'd say "Bruce Lee was a kungfu master," but we know him to be a kungfu master.

I have some doubts, because in a moment she wrote: "I'm really envy how good you know English, but I pretty sure that it's all the result of hard work". I know the right way of this sentence is: "I really envy how good you are in English, but I'm pretty sure it's all the result of hard work". "How good you know English" sounds right to me.

2017年12月1日 · That's because you expect that the people you are talking to probably know who you are, or at least could look at the list of invitees, but they don't necessarily know that this voice is yours. "Hello, this is James" was also a common way for someone named James to answer the phone, back in the days when phones were more tied to a location than ...