What is "I Know"? "I know" is an English phrase that expresses knowledge or certainty. It's often used to confirm information or to show that you are aware of something. For example, if someone asks you if you know where the nearest coffee shop is, you might respond with "I know."
1. I Know (Present Simple) This is the most straightforward form of "I know." It's used to express general knowledge or something that is true at the moment. For example: - I know my way around the city. - I know that you like chocolate.
2. I Knew (Past Simple) The past simple form, "I knew," is used to express knowledge that you had in the past. It's important to note that this form is not often used in everyday conversations, as it can sound a bit formal. For example: - I knew the answer to the question. - I knew the secret before you told me.
3. I've Known (Present Perfect) The present perfect form, "I've known," is used to express knowledge that started in the past and continues to the present. It's often used with time expressions like "for a long time" or "since." For example: - I've known you for years. - I've known that book is a classic.
4. I'll Know (Future Simple) The future simple form, "I'll know," is used to express knowledge that you will have in the future. It's often used in sentences where there is a sense of certainty about the future. For example: - I'll know the answer by tomorrow. - I'll know where to find the information.
5. I Was/Am Knowing (Present Continuous) The present continuous form, "I was/Am knowing," is used to express knowledge that is happening at the moment or over a period of time. This form is less common than the others. For example: - I was knowing the answer to the question. - I'm knowing where the meeting is.
Formal: "I know that the presentation will be successful." -
Informal: "I know you'll be late for the party." -
Present Perfect: "I've known my best friend since high school." -
Future Simple: "I'll know the results by next week."