Đáp án:

1.

 * Nếu từ gạch chân là in Hue: Where did I stay with my brother? 

⇒ Did + S + V +.....?

⇒ Where dùng để hỏi địa điểm

 * Nếu từ gạch chân là my brother: Who did I stay with in Hue?

⇒ Did + S + V +.....?

⇒ Who dùng để hỏi về người

2. Although I love films , but I don’t like watching them on television.

⇒ Although + S + V, S + V +….

3. I didn’t go to school yesterday because I was sick.

⇒ Because + S + V + ……

4. He is lazy, so he often gets bad marks.

⇒ S + V + so + S + V 

`1`.Where did you stay with your brother ?

`\rightarrow` Thì QKĐ ( CNV ) : Did + S + V ?

`\rightarrow` Where dùng để hỏi về địa điểm

`2`.Although I love films , I don't like watching them on television

`\rightarrow` Although + C1 + C2 : Mặc dù

`3`.Because I was sick , I didn't go to school yesterday

`\rightarrow` Because dùng để chỉ nguyên nhân hoặc lý do

`4`.He is lazy , so he often gets bad marks

`\rightarrow` So dùng để chỉ kết quả

`\text{@ TheFox}`