sometimes,some time,sometime,some times的区别,并各造一个句子,和几道练习题.

sometimes 有时 eg:I always stay at home after work,but sometimes I do sports with Tom.（下班后,我一般都呆在家里,有时会跟汤姆去做运动.）
some time 一段时间 eg:My friend will come here to stay with me for some time this summer.（我的朋友在这个夏天将会来跟我呆上一段时间.）
sometime 某个时间 eg:Lily's grandmother will come to see her sometime this Sunday.（丽丽的奶奶会在这个星期天的某个时候来看她.）
some times 多次 eg:I am sure that we have met some times before.（我肯定我们之前见过几次了.）