`->` Our team had encountered many obstacles succeeded 

`=>` Before `+` S `+` V(QKĐ) , S `+` V(QKHT) 

`=>` cấu trúc QKĐ : `(+)` S `+` V2/-ed

`=>` cấu trúc quá khứ hoàn thành : `(+)` S `+` had `+` V3/-ed

Đề : Our team /encoun/many / obstaccles/ before/ we/ succed.

`=>` Our team had encountered many obstacles before we succeeded.

Cấu trúc: 

Before + subject + $V_{2/ed}$ , Subject + $V_{3/ed}$ 

`QKĐ`: S + $V_{2/ed}$

`QKHT`: S + had + $V_{3/ed}$

 $\color{green}{\text #GreenTea}$