有關英文時態問題想問問

Of course no problem

1- tense: present perfect correct
2- spelling: no problem
3- grammar: correct
4- logic: no problem

So CORRECT

HOPE I CAN HELP YOU ^_^

Your sentence is correct!!!!!!!!!!!

I have been buying oranges since I was twenty years old."

correct

The present perfect denotes present results of the past actions;when" since" is used.
The present perfect continuous shows that the action of buying oranges began in the past, has extended up to the present and may continue in the future;
eg:-I have been buying oranges for (a certain period of time)
"since" is used when refers to a point of time in the past=since 20.

Yes. Yes. Yes.