1. My father explained the subject more clearly than my brother's.
⇒ So sánh hơn với tính từ dài : more + ADJ/ADV + than
2. My father fancy carving eggshell in his free time.
⇒ Interested in + V- ing = Fancy + V-ing
3. Life in the countryside is more peaceful than that in the city.
⇒ So sánh hơn với tính từ dài : more + ADJ/ADV + than
4. Which of your language does your mother can speak?
⇒ Which : từ để hỏi cho câu hỏi lựa chọn