1.It is about 100 kilometers from Ha Noi to Thanh Hoa 

→→ Khoảng cách : It is about + distance + from N1 + to N2

2.Despite being so young , Quang Hai plays football beautifully

→ Despite / In spite of + V-ing / N + Clause : Mặc dù

3.My father used to live in small village when he was a child

→→ 'S + used to + V :′S + used to + V : Đã từng

4.How far is it from Thanh Hoa to Ha Noi ?

→→ Hỏi về khoảng cách : How far is it + from N1 + to N2 ?

5.I often went to school on foot when I was a student

→→ Thì QKĐ : S + Ved / V2

→→ Thì QKĐ ( ĐT Tobe ) : S + was / were + adj / n