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1. Phong asked Peter if he liked singing.

2. She asked me if there were some oranges in the fridge.

3. She asked John if it would rain the following day.

4. Tam asked Linda if she had gone to Hue three years before.

Câu tường thuật -> lùi thì

HTĐ -> QKĐ 

Will -> Would (tomorrow -> the following day)

QKĐ -> QKHT (ago -> before)

$⇒$ Cấu trúc câu gián tiếp với câu hỏi dạng yes/no:

S + asked/wanted to know/wondered + if/whether + S + V(chia theo S, lùi 1 thì)

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1, Phong asked Peter if he liked singing.

$→$ Thì hiện tại đơn lùi 1 thì thành thì quá khứ đơn có cấu trúc: S + V(past) + (O)

2, She asked me whether there were some oranges in the fridge.

$→$ Thì hiện tại đơn lùi 1 thì thành thì quá khứ đơn có cấu trúc: S + V(past) + (O)

3, She asked John if it would rain the following day.

$→$ Thì tương lai đơn lùi 1 thì, will thành would. Tomorrow chuyển thành the following/next day

4, Tam asked Linda if she had gone to Hue three years before.

$→$ Thì quá khứ đơn lùi 1 thì thành quá khứ hoàn thành, có cấu trúc: S + had + Vpp + (O). Ago chuyển thành before trong câu gián tiếp.