I'm always confused to distinguish these tenses.
Can anyone tell me a easy way to differentiate them?
Trần NhanI'm always confused to distinguish these tenses.
Can anyone tell me a easy way to differentiate them?
The source you used is clear but I don't think she clarified the difference well. Here is another source. I think it's excellent for understanding.
Present perfect simple or present perfect continuous? - English Grammar Today - Cambridge Dictionary
Keep in mind that sometimes, either tense can be used with the same meaning.