Originated in Ethiopia, coffee was drunk in the Arab world before it came to Europe

Kiến thức cần nhớ

Cách rút gọn mệnh đề khi hai vế câu có cùng chủ ngữ: Bỏ đi chủ ngữ của mệnh đề trạng ngữ, đồng thời chuyển động từ thành V- ing (dạng chủ động) hoặc (Being) + PP_II (dạng bị động)

Ex: - When he went home, he realized he had left his cell phone at the office.

→ Going home, he realized he had left his cell phone at the office.

- When he was attacked by a big dog, he ran away.

→ Attacked by a big dog, he he ran away.