sometimes,sometime,some time,some times有什么分别?

（1）sometimes的意思是“有时”，是副词。例如：
Sometimes he comes by bike and sometimes by bus.
他有时骑车来，有时乘公共汽车来。

（2）sometime也是副词，意思是“在某个时候”。可用于一般过去时与将来时。例如：
You can hand in your homework sometime before Friday.
你可以在周五前某个时候交作业。

（3）some time是名词短语，它的意思是“一段时间”。例如：
I'll be away for some time. 我将离开一段时间。

（4）some times也是一个名词短语，time在这里用作可数名词，意思是“次数”。
some times的意思是“几次”。例如：
I have been to the Great Wall some times.
我去过长城几次。

有一个口诀可以帮助记忆：
分开“一段时间”，相聚“某个时候”；
S连住是“有时”，分开“几次”、“几倍”行。
解释：some和time分开写时表示“一段时间”，连着写时表示“某个时候”；有S连着写时表示“有时”，分开写表示“几次”、“几倍”的意思。

(1) sometimes 副词= 有时候; "at time; now and then"
(a) Sometimes she wished she were back in Beijing;
(b) Sometimes her photography is breathtaking;
(c) Sometimes they come for a month; at other times for six months"

(2) sometime 副词= 某时:"some day; one day"
(a) I will see you sometime next week: 我下周某时/某日会见你
(b) Let's get together sometime.
(c) Why don't you come and see me sometime?

(3) sometime 形容词:
(a) Bush was sometime the U.S. President 某个时候=<前>总统.
(b) She was in her early thirties, a sometime actress, dancer and singer. 某个时候/时代是演员, 舞蹈家，歌手.

(4) some time 名词短语=一段时间
(a) Please give him some time to finish his homework.
(b) I have not met my parents for some time alread

sometimes有时
sometime某时
some time一些时间（一段时间）
some times几次