some day和someday区别：some day可以拆开当成词组使用，意思有“总有一天”、“有朝一日”、“将来”，常用于将来时；而someday只能当单词使用，意思有“某一天”、“将来有一天”，常放于句首。

一、some day的基本释义及双语例句

some day意为总有一天、有朝一日、将来，可以拆开当成词组使用，常用于将来时。例句有：

1、Some day he'll be famous.

总有一天他会成名的。

2、Some day I'll pay you back for this!

总有一天我会为此报复你。

3、I hope some day you will find the woman who will make you happy.

我希望有一天你能找到一个会让你幸福的女人。

4、If he goes on like this, he will be imprisoned some day.

如果他继续这样下去，势必有一天要蹲监狱。

5、Depend upon it, he will let you down some day.

等着瞧吧，总有一天他会拆你的台。

6、Some day someone will write the full epic of this exciting expedition.

总有一天有人会把这部激动人心的远征史诗全部写下来。

7、I'm busy today. Let's talk about it some other day.

今天没空儿，改日再谈吧。

二、someday的基本释义及双语例句

someday意为某一天、有朝一日，是一个副词，常放于句首。例句有：

1、I solemnly vowed that someday I would return to live in Europe

我郑重发誓，总有一天我将回到欧洲生活。

2、I believe that he will show his true colors someday.

我相信他总有一天会现出原形的。

3、So you fancy yourself as the boss someday?

这么说，你是想有一天自己当上老板喽？

4、We may find it useful in future.; It may come in handy someday.

这东西日后可能用得着。

5、I would like to go to college someday.

我想有一天能上大学。

6、Someday soon, however, this scenario could be real.

有一天很快，然而，这一个情节可能是真正的。