`1.` He isn't good at cooking, so he can't become a chef.

`->` If I were good at cooking, I would become a chef.

`-` Câu điều kiện loại 2: If + S + V-ed, S  + would/could/should + V-inf

`2.` I find it hard to go at the same speed as her sister on walking holidays

`->` I find it hard to catch up speed with her sister on walking holidays.

`-` Khó để đi cùng một lúc = Khó để bắt kịp

`3.` Mary have visited Ha Long Bay once before.

`->`  This is the second time Mary have visited Ha Long Bay.

`-` This is the first/second/last… time + S + have/has + PP

`@ Tp`

`1)` If I were good at cooking, I would become a chef.

`->` ĐKL2: If + V(qkd), S + would/should/could + V-inf

`2)` I find it hard to catch up speed with her sister on walking holidays.

`->` Find + it + adj + to do st: cảm thấy như nào cho việc gì

`3)` This is the second time Mary has visited Ha Long Bay.

`->` This is the .... + time + S + have/has + PII/ed