`86.` The last time we went to Da Nang was `3` years ago.

`->` S + last + Ved/V2 + time + ago

`=` The last time + S + Ved/V2 + was + time + ago

`87.` This is the first time I have visited Japan.

`->` This is the first time + S + have/has + P2

`88.` The weather prevented us from sailing.

`->` prevent sb from doing sth: ngăn ai làm gì

`89.` I was the first person to leave the party.

`->` rút gọn mệnh đề quan hệ bằng cách dùng cụm to V (câu có the first ở trước)

`90.` My parents never let me walk barefoot when I was a child.

`->` let sb do sth: cho phép ai làm gì