when we have to use since &for
with perfect continuous tenses :)
To use since/ for
I have been study English since 2010 (Since - To specify the year, month, day, hour ...)
I have been study English for 3 years ( For - To specify how long you are doing this)
I hope you understand
you can refer to the post below:
Can I say "I want to cry because of a girl"?
Differences between present perfect and present perfect continues
Presentation language used to arise discussion
What is the difference between effect and affect?
In what type of sentence we have to use um.........,huh......, er.......
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