ركن النقاش حول المنهج وفنيات اللغه

[Essam ABDOU]

According to Longman English Grammar by L. G. Alexander,

"Adverbs often associated with the Present Perfect: already, ever, for (+period of time), just, never, never...before, since (+point of time) are often used with the Past Perfect to emphasize the sequence of events:

When I rang, Jim had already left.
The boys loved the zoo. They had never seen wild animals before."

Unfortunately, the author didn`t provide an example for since.