$7$. They haven't talked to each other for two months.

$8$. She hasn't seen her elder sister since 1999.

$9$. She hasn’t seen her elder sister since 1999

$10$. It’s ten years since Robert and Catherine married.

Câu này chủ yếu là dùng HTHT

→ S + have/has + past participle + O

#Study well

$\text{7.They haven't talked to each other for two months .}$

$\text{8.She hasn't seen her elder sister since 1999 .}$

$\text{9.It's years since she last wrote to me. }$

$\text{10.It's ten years since Robert and Catherine married.}$

$\text{-> S+ last +Ved/cột 2 + ........}$

$\text{-> The last time +S+Ved/cột 2 + ... + was + time}$

$\text{-> It's + time + since + S + last + Ved/cột 2 }$

$\text{-> Nếu trong câu có last thì câu chuyển sang là câu phủ định}$

$\text{-> S+hasn't/haven't + Vpp + O}$

$\text{Linhh}$