The preposition 因
The preposition 因 
is placed in the first part of a sentence and an action is placed in the second part of a sentence. 因 indicates a reason for the action.
is placed in the first part of a sentence and an action is placed in the second part of a sentence. 因 indicates a reason for the action.Scheme
因
reason
action
result
The subject can be placed either before 因 in the first part of a sentence or before the predicate in the second part of a sentence.
In the first case, the pattern is the following:
Scheme
subject
因
reason
predicate
Examples
昨天她因病请假
She took sick leave yesterday
zuótiān tā yīn bìng qǐngjià
她因出门太晚迟到了
She was late because she left the house too late
tā yīn chūmén tài wǎn chídào le
If the subject is placed in the second part of a sentence, we should put a comma before it.
Scheme
因
reason
subject
predicate
Examples
因公司的业务需要，她要去中国出差
She’s going to China on a business trip.
yīn gōngsī de yèwù xūyào, tā yào qù zhōngguó chūchāi
n sentences with 因, the predicate is usually preceded by 而 .
.Scheme
因
reason
而
action
result
Examples
我因危险驾驶而被抓住
I was arrested for reckless driving
wǒ yīn wéixiǎn jiàshǐ ér bèi zhuāzhù
他曾因另类行为而出名
He's known for his unusual behaviour
tā céng yīn lìnglèi xíngwéi ér chūmíng