| | Since, for and how long
I found in a textbook that when (since,for& how long) come with an action verb, then we use the present perfect continuous. When the verb is stative, we use the present perfect simple. But I found in another page of the text these sentences:
1. 1.She hasn't eaten there since June.
2.He hasn't spoken to me since Christmas.
Q: Why are action verbs" eat & speak" used with since to refer to the present perfect simple? I mean Shouldn't we use the present perfect continuous? !!!