如果

nǐ rú guǒ yǒu shén me kùn nan wǒ kě yǐ bāng zhù nǐ

你如果有什么困难，我可以帮助你。

I can render a hand if you have difficulties.

rú guǒ yǒu shí jiān wǒ yī dìng huì lái

如果有时间，我一定会来。

If I have time, I will certainly come.

rú guǒ dí rén bù tóu xiáng de huà nà jiù xiāo miè tā

如果敌人不投降的话，那就消灭他。

If the enemy don't surrender, destroy them.

rú guǒ wèi wǒ fù dān fèi yòng wǒ jiù qù

如果为我负担费用，我就去。

I will agree to go provided my expenses are paid.