1. Study hard or you will fail the exam.

→ If you don't study hard, you will fail the exam.

→ If you study hard, you won't fail the exam.

2. Work hard or you won’t pass your examination.

→ If you don't work hard, you won't pass your examination.

→ If you work hard, you will pass your examination.

3. Water flowers or they will die.

→ If you don't water flowers, they will die

→ If you water flowers, they won't die.

4. Keep the environment clean or we won’t have an ideal place to live.

→ If we don't keep the environment clean, we won't have an ideal place to live

→ If we keep the environment clean, we will have an ideal place to live.

5. Get up early or you’ll be late for school.

→ If you don't get up early, you will be late for school.

→ If you get up early, you won't be late for school.

* Nhìn chung thì đây là những câu điều kiện loại 1 cơ bản. Mình cho khẳng định và phủ định làm thành 2 dạng câu.

* Cấu trúc:

- Câu điều kiện loại 1: If + Present simple, S + will/can + V (bare)

- Câu điều kiện loại 2: If + Past simple, S + would/could + V (bare)

- Câu điều kiện loại 3: If + Past perfect, S + would have + VPII

1. If you don't study hard, you will fail the exam.

If you study hard, you won't fail the exam.

2. If you don't work hard, you won't pass your examination.

If you work hard, you will pass your examination.

3. If you don't water flowers, they will die

 If you water flowers, they won't die.

4.  If we don't keep the environment clean, we won't have an ideal place to live

If we keep the environment clean, we will have an ideal place to live.

5. If you don't get up early, you will be late for school.

If you get up early, you won't be late for school.

Câu điều kiện loại 1 là câu điều kiện có thực ở hiện tại, dùng để diễn tả những sự việc/ điều kiện có khả năng xảy ra ở hiện tại hoặc tương lai.

Công thức : If + S + V(s/es), S + will/can/shall + V(nguyên mẫu)