Because A, So B
因为 A, 所以 BThis sentence pattern is used to explain cause and effect. '因为' (because) comes before the cause, and '所以' (so) comes before the result.
因为他很忙,所以没有时间休息。
Because he is very busy, he has no time to rest.
因为明天有考试,所以今天要练习。
Because there's a test tomorrow, I have to practice today.