This is the 167th most frequent Dutch word.
jij
"You" (informal singular).
In this sentence, 'jij' emphasizes the subject 'you', implying that the speaker feels personally addressed in saying the statement.
Jij bent een goede vriend.
You are a good friend.
Here, 'jij' is used to clarify or contrast, possibly implying an expectation or a specific decision regarding 'you'.
Ik dacht dat jij het zou doen.
I thought that you would do it.
In this question, 'jij' serves to directly address the listener, emphasizing who the subject is in relation to the action inquired about.