Cấu trúc đảo ngữ trong câu điều kiện

 

Câu điều kiện loại 1

• Công thức thông thường:
  If + S + (not) + V(s/es), S + will/can/may/might + V (nguyên thể)

• Hình thức đảo ngữ:
  Should + S + (not) + V, S + will/can/may/might + V

Ví dụ:

• If she studies hard, she will pass the exam.

• Should she study hard, she will pass the exam.

Câu điều kiện loại 2

• Cấu trúc chuẩn:
  If + S + were/V-ed (thì quá khứ đơn), S + would/could/might + V

• Khi đảo ngữ:
  Were + S + (not) + (adj/N), S + would/could/might + V

Ví dụ:

• If he knew her address, he would visit her.

• Were he to know her address, he would visit her.

Câu điều kiện loại 3

• Dạng gốc:
  If + S + had (not) + V3/ed, S + would/could/might + have + V3/ed

• Cách viết đảo ngữ:
  Had + S + (not) + V3/ed, S + would/could/might + have + V3/ed

Ví dụ:

• If they had left earlier, they would have caught the train.

• Had they left earlier, they would have caught the train