I already know how to turn on the television. In the first sentence, it seems to me that to know expresses that the speaker experienced the problem/difficulty. In (2), however, the object of.
Why would you have a problem with this? Alright, well, for example, like on saturdays, y’know, what i liked to do. Can it be used in formal conversation/writing?
I know (about) this difficulty/problem. Also explain the difference between the two, thanks. You would use the present perfect to express something that happened previously, without specifying the time. 'know of' is used when you have personal.
What is the correct usage of phrase you don't know what you don't know? I saw this sentence in the book 1q84: However, i am having trouble figuring out why (or whether) this is the correct way to write the sentence,. I know how to drive a car.
It's not just you that don't know. Recently one of my friends told me that there is distinct difference between 'know of something' and 'know about something' expressions.