'口' (kǒu) is the dedicated measure word for family members. For non-family groups, use '个' (gè).
'兄弟姐妹' covers all siblings. '独生女' (only daughter) and '独生子' (only son) are very common cultural concepts.
Standard professional inquiries. Answer with: '我是 + Profession' (我是记者 / 我是医生).
Three-tier age inquiry etiquette in Chinese: elderly (多大年纪/多大岁数), kids under 10 (几岁), adults/peers (多大).
Spoken demonstrative chunk: '这 / 那 + Noun' directly (without classifier) + '真 + Adjective' expressing spontaneous admiration.
Phrases by situation, with pinyin & audio
Learn words through real-life situations
Stroke order for every character
The building blocks of Chinese characters
Split hanzi into parts, remember by story