倘若当时再多考虑一下，结果也许会完全不同。

Tǎngruò dāngshí zài duō kǎolǜ yíxià, jiéguǒ yěxǔ huì wánquán bùtóng.

If we had thought a bit more back then, the result might have been completely different.

倘若没有大家的支持，这个项目根本不可能完成。

Tǎngruò méiyǒu dàjiā de zhīchí, zhège xiàngmù gēnběn bù kěnéng wánchéng.

If it weren’t for everyone’s support, this project would simply be impossible to complete.

倘若明天下雨，我们就改在室内开会。

Tǎngruò míngtiān xiàyǔ, wǒmen jiù gǎi zài shìnèi kāihuì.

If it rains tomorrow, we will change to have the meeting indoors.