1) The boys/not know/the new coach/before.

⇒ The boys have not known the new coach before.

+)Note: Câu trên động từ chia theo thì HTHT.(DHNB: before)

2) Maryam/i/keep/touch/since our first meeting.

⇒ Maryam and I have kept on touch since our first meeting.

+)Note: Câu trên chia động từ theo thì HTHT. (DHNB: since our first meeting)

               Keep on touch:giữ liên lạc với ai đó.

Cho mik câu trl hay nhất bn nhé!

`1`.The boys haven't known the new coach before

`\rightarrow` Thì HTHT ( PĐ ) : S + haven't / hasn't + VpII 

`\rightarrow` `DHNB` : before

`2`.Maryam and I have kept touch since our first meeting

`\rightarrow` Thì HTHT : S + have / has + VpII

`\rightarrow` `DHNB` : since

`\text{# TF}`