بالطبع كتاب المعلم ليس على خطأ علينا جميعا الاعتراف بأن كثيرا من القواعد التى تدرس للطلبه نعتبر الاستخدام الشائع هو قاعده وعندما سألنا موقع النشر عن هذه المسألة قال أن could أو would تأتى مع جميع الضمائر مع الاختلاف فى المعنى.
If only they could speak French. (They can't but they wish they could. By the way, this could also be I wish they could speak French.)
If only they would speak French. (They are able to but they don't and I am annoyed by this. It would be highly unlikely that they would say this about themselves.)