搜狗做题网because,for,since,as的区别
来源：学生作业帮 编辑：搜狗做题网作业帮 分类：英语作业 时间：2024/04/28 02:58:09
because,for,since,as的区别
ecause语气强,表示客观必然原因：
He is absent,because he is ill.因为生病,所以他没来.
比较:He is absent,for he is busy.（“生病”是“缺席”的必然原因,“忙”不是必然原因.）
for 语气轻,表示非客观必然的原因,是主观可改变结果的原因,甚至是猜测可能的原因:
He must be ill,for he is absent.“缺席”不一定是“生病”,只是交流猜测.
for 不能放句首,它是并列连词.
since,as 都是不讲自明的原因,是已知的原因.
Since I am a boy,let me carry the case.
As you don‘t feel well,you had better stay at home.
He is absent,because he is ill.因为生病,所以他没来.
比较:He is absent,for he is busy.（“生病”是“缺席”的必然原因,“忙”不是必然原因.）
for 语气轻,表示非客观必然的原因,是主观可改变结果的原因,甚至是猜测可能的原因:
He must be ill,for he is absent.“缺席”不一定是“生病”,只是交流猜测.
for 不能放句首,它是并列连词.
since,as 都是不讲自明的原因,是已知的原因.
Since I am a boy,let me carry the case.
As you don‘t feel well,you had better stay at home.
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