`8`. Han asked me why I had done that.

`@` Câu tường thuât Wh-questions:

`-` S + asked/wondered/wanted to know + (O) + wh-word + S + V(lùi thì)

`-` Lùi thì: QKĐ `->` QKHT (had V3/ed)

`9`. Sam asked me if I had finished the project.

`@` Câu tường thuật Yes/No questions:

`-` S + asked/wondered/wanted to know + (O) + if/whether + S + V(lùi thì)

`-` Lùi thì: HTHT `->` QKHT (had V3/ed)

`-` Đổi ngôi: you `->` I

`10`. Bill asked me how many projects I had reported since `2023`.

`@` Câu tường thuât Wh-questions:

`-` S + asked/wondered/wanted to know + (O) + wh-word + S + V(lùi thì)

`-` Lùi thì: HTHT `->` QKHT (had V3/ed)

Đáp án + Giải thích các bước giải:

`8.` Han asked me why I done that.

`9.` Sam asked me if I had finished the project

`10.` Bin asked me how many projects I had reported since 2023

Cấu trúc

`-` Wh-question

S + asked + (O) + (that) + S + V(lùi thì) + ...

`-` Yes/No question

S + asked + (O) + (that) + if/whether + S + V(lùi thì)

HTHT `->` QKHT

QKĐ `->` QKHT