如果 | rú guǒ | if / in case / in the event that | |
一旦 | yī dàn | in case (sth happens) / if / once (sth happens, then...) / when / in a short time / in one day | |
以防 | yǐ fáng | (so as) to avoid / to prevent / (just) in case | |
假若 | jiǎ ruò | if / supposing / in case | |
假使 | jiǎ shǐ | if / in case / suppose / given ... | |
倘 | tǎng | if / supposing / in case |