sometimes ,some times ,sometime,some time.的用法

sometimes 有时候
some times 强调次数
,sometime在某一时候
,some time.强调一段时间
例句
1 She will be here sometime(=at some time) tomorrow.
2 I have never been to London but she has been there quite some times
3 he isn't always late.he is only sometimes late
3 the work is hard and will take us quite some time to do.
4 she has been here quite some times
5 she has been here for quite some time (==five days)