Examples of using "僕はこのテニスの試合に勝てるという確信がある。" in a sentence and their english translations:
- I am sure of winning the tennis match.
- I'm sure I'll win the tennis match.
- I'm certain that I'll win the tennis match.
- I think, without a doubt, that I'll win the tennis match.
- I'm confident that I'll win the tennis match.