The conjunctions 以免 and 免得
We can use the conjunctions 以免 
and 免得 to indicate that there is something a person should avoid.
These conjunctions are used in compound sentences.
The recommendation is usually described in the first part of a sentence. The second part of a sentence states what can happen if a certain condition is not met.
and 免得 to indicate that there is something a person should avoid.
These conjunctions are used in compound sentences.
The recommendation is usually described in the first part of a sentence. The second part of a sentence states what can happen if a certain condition is not met. Pay attention
以免 and 免得 are used in written language.
Scheme
subject
action 1
以免/免得
action 2
Examples
你把作业写下来，以免忘记
Write down your homework so you don't forget
nǐ bǎ zuòyè xiě xiàlái, yǐmiǎn wàngjì
她自己去做了，以免发生争论
She did it herself to avoid an argument
tā zìjǐ qù zuò le, yǐmiǎn fāshēng zhēnglùn
请把活儿都干完，免得明天再来
Please, finish all the work today so that you don't have to come here tomorrow
qǐng bǎ huór dōu gàn wán, miǎnde míngtiān zài lái