因为期限已满
because the time is up
因为家庭关系
because of family reasons
因为有此必要
because there is this need
因为天气不好
because the weather is bad
因为严寒将至
because it is about to get very cold
因为下雨
because it is raining
因为路远
because it is a long way
因为他不知道，所以也难怪他。
It is hard to blame him when he does not know.
因为不了解情况，他才这么说的。
He only said this because he does not understand the situation.
他因为生病没有来。
He has not come because he is ill.
我们决不可因为胜利而放松自己的努力。
We cannot relax our efforts just because we have won.