This is the first time I have tried such an amazing experience. => I have never tried such an amazing experience before.

Tom passed the exam because he revised thoroughly for it. => Because of revising thoroughly, Tom passed the exam.

Please stay at home this Christmas. => I’d rather you stayed at home this Christmas.

Keeping calm is the secret of passing your driving test. => As long as you keep calm, you will pass your driving test.

Both of the chairs are uncomfortable. => Neither of the chairs is comfortable.

This is the first time I have tried such an amazing experience.
=> I have never tried such an amazing experience before.

Tom passed the exam because he revised thoroughly for it.
=> Because of his thorough revision, Tom passed the exam.

Please stay at home this Christmas.
=> I’d rather you stayed at home this Christmas.

Keeping calm is the secret of passing your driving test.
=> As long as you keep calm, you will pass your driving test.

Both of the chairs are uncomfortable.
=> Neither of the chairs is comfortable.