Please tell me what this quoted B sentence means under the context. Thank you.
A：My kids come home, grab somthing to eat, and then run off again. I never see them.
B: Oh, I know. " Whatever happened to family dinners? "
A: Yeah. I don't think families spend enough time together.

Question

Please tell me what this quoted B sentence means under the context. Thank you.
A：My kids come home, grab somthing to eat, and then run off again. I never see them.
B: Oh, I know.  "   Whatever happened to family dinners?   "
A: Yeah. I don't think families spend enough time together.

Answer

We use the phrase 'Whatever happened to xxxx'?' as a kind of rhetorical question, to show regret about something good which has disappeared. It's a rhetorical question because everybody knows the answer - in this case both speakers acknowledge the fact that families nowdays are often too busy to have dinners together.

Another example might be if you see a situation where people are being rude - not saying excuse me, thank you or sorry - someone might remark 'Whatever happened to good manners?'

Answer

Just a comment, we say 'in this context' but not 'under this context'.
What does this sentence mean in this context?
Please me tell what this sentence means in this context?

Đừng bỏ lỡ cơ hội học ngoại ngữ ngay tại nhà. Hãy xem danh sách các gia sư ngôn ngữ giàu kinh nghiệm của chúng tôi và đăng ký buổi học đầu tiên ngay hôm nay!