`VI`.

`4`.She asked me if I could swim across that river

`\rightarrow` Câu tường thuật NV ( Yes / No ) : 

`=>` S + asked + O + if / whether + S + V ( lùi thì ) ( `3 , 4` )

`\rightarrow` Can `->` Could

`VII`.

`1`.English is spoken in the world today

`\rightarrow` BĐ `-` Thì HTĐ : S + is / am / are + V3 / PII ( by O )

`2`.She said that her mother was a doctor

`\rightarrow` Câu tường thuật : S + said + that + S + V ( lùi thì )

`\rightarrow` HTĐ `->` QKĐ ( ĐT Tobe ) : S + was / were + adj / n

`3`.Hoa asked Nam whether he lived in Binh Phuoc province

`\rightarrow` HTĐ `->` QKĐ : S + Ved / V2

`4`.Viet Nam is a rice-exporting country

`\rightarrow` Thì HTĐ ( ĐT Tobe ) : S + is / am / are + adj / n

`\rightarrow` Tính từ ghép : Danh từ `-` V-ing

`\text{# Kirigiri}`