MANDARIN SENTENCE PATTERN
Reasons with 因为 and 所以
Connect a reason to its result.
因为 + reason, 所以 + result
因为 introduces a reason, and 所以 introduces a result. Mandarin can use both in one sentence, although natural English often uses only because or so.
You can also use just one of these words when the relationship is already clear.
Examples
因为下雨,所以我在家。
Because it is raining, I am at home.
我很累,所以想休息。
I am tired, so I want to rest.
我学中文,因为我喜欢中国电影。
I study Chinese because I like Chinese films.
Keep in mind
Choose a clear reason and result; avoid treating connectors as interchangeable decorations.