I don't know why there are two verbs(do, know) in one sentence. Can you explain why and maybe give me some examples too?
Native speaker’s answer
Rebecca
In the case of this sentence, the word "do" is not used as a normal verb in the phrase "I do know". Instead, it is called the 'empathic do'. The 'emphatic do' is a particular use of the verb 'do' to add emphasis or stress to an affirmative sentence. Unlike ordinary auxiliary verbs, which are typically unstressed in speech, the emphatic do is almost always stressed. If you say "I know how to cook" it means that you are able to cook, but if you say "I do know how to cook", then you stress the fact that you actually know how to cook (in this case, the other person may think that you can't cook at all). Ex: Now, I don't speak Chinese, but I do speak a little Polish, a little Korean, and a few words in half a dozen other languages. Ex: I know it doesn't look like it, but I really do work hard around here. It's just that I'm so disorganized that I never finish anything I start.
