`28.` If Jane hadn't failed the exam, she wouldn't have been sad.

`->` Điều kiện loại `3:`

If + S + had + P2, S + would/could + have + P2

If 1:

If + S + am/is/are , S + will/can/shall + V1

If + S + V1/s/es , S + will/can/shall + V1

If 3:

If + S + had + V3/ed , S + would / could + have + V3/ed

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28. If Jane hadn't failed the exam, she wouldn't have been sad.

29. Unless someone doesn't send him ... , the child will die.

`color{orange}{~MiaMB~}`