1. My father told me that he would help me to repair my motobike the next day.

*Câu tường thuật với câu trần thuật: S + said to/told + O + (that) + S + V (lùi thì)

(I -> he ; will -> would ; your -> my ; tomorrow -> the next day/ the following day)

2. Do you know that lady whose car I repaired?

- whose : đại từ quan hệ chỉ sở hữu

3. An essay on gender equality must be written by each student.

*Bị động của "must": S + must + be + Vpp + (by O)

4. My mother allowed the children to splash around in the pool for a while yesterday.

*S + let (chia) + O + Vinf = S + allow (chia) + O + to V: cho phép ai làm gì