Sentence examples for I knock from inspiring English sources

"I knock" is a grammatically correct and usable part of a sentence in written English.
It is a complete sentence on its own and can be used in written English whenever someone is knocking on a door or surface. For example: - "I knock on the door and wait for someone to answer." - "I knock on the table to get everyone's attention." - "I knock on the wall to see if it's hollow." - "I knock on the window to wake you up."