– Loại 1: If V1 (s/es), will/can V1 (hoặc V1 (s/es)).
Ex: 1. If Mary studies hard, she will pass the exam.
- If you forget your password, please contact the technical department.
=> Đảo ngữ: Thay If bằng Should và trả động từ về nguyên mẫu.
Ex: … Mary study hard, she will pass the exam.
A. if B. should C. were D. had
– Loại 2: If V2/were, would/could V1.
Ex: If today were Sunday, I would go swimming.
– Loại 3: If had V3, would/could have V3.
Ex: If he had studied hard, he would have passed the exam last year.
=> Đảo ngữ: Bỏ If và đảo had lên đầu câu.
Ex: … he studied hard, he would have passed the exam last year.
A. if B. should C. were D. had