I have stayed here (for-since) the summer

الاجبة الصحيحة for

for + the + -----------
since+ ---------------

الاختيار يكون حسب المقصود فمثلا إذا قصدت قضاء الصيف فى ذلك المكان تستخدم for أما إذا كان المقود منذ الصيف تكون الإجابة بالطبع since أما عن تأثير the فليس لها دخل هنا بالإجابة.

أعتقد أن the summer المقصود بها مده الصيف كلها لذالك فالاجابه الصح هي for

الاجابه الصحيحه هى since , وليست for لان الاخيره ياتى بعدها فقط a / an /number
ex. I have been playing for a day(for an hour/ 3 hours)
we say, I have been there since the summer

الاجابه هى for

since هى الاجابة الصحيحة إن شاء الله

الاختيار يكون حسب المقصود فمثلا إذا قصدت قضاء الصيف فى ذلك المكان تستخدم for أما إذا كان المقود منذ الصيف تكون الإجابة بالطبع since أما عن تأثير the فليس لها دخل هنا بالإجابة.
I agree with you. I think both of them are correct . If we say I have stayed here for the summmer then it means that I have stayed there for the period of the three months of this season and I have stayed since the summer, it means I began staying there since this season and I may still stay

If we follow the British English, the answer will be" for " but if we follow the American English both "for" and "since" are correct as mrososeng (http://thanwya.com/vb/member.php?u=136427) said. That's because in British English, the seasons of the year are not preceded by " the " so " since is not correct here.But in American English they are preceded by "the" so both "for" and "since" are correct. That's my opinion. I hope you discuss it with me