Hi,
I need help. I am sorry if my English is bad and the question easy, but bear with me, I am only a 16 years-old foreigner.
I read 'Present Simple versus Present Perfect' thread a few minutes ago. I admit that the person who explained it did it wonderfully, but I still have one question. It was said that, being the Present Tense, Present Perfect can be used in sentences with 'now'.
e.g. I have written a letter now.
and I've seen lots of people using it with 'just'
e.g. I have just finished my assignment.
Can I use Present Simple in those sentences? If I can, what is the difference? Please explain it to me a bit.
Thank you.