你先玩一会儿英文

:) you go on playing

u continue,i go out 4 a while.

1. 来访者在中午前一会儿离开了。 The visitor left a little before noon. 2. 她一时昏迷，坐下呆了一会儿才醒过来。 She sat stunned for a while, until she recovered. 3. 她躺着沉思了一会儿。 She lay musing for a while. 4. 我想和你谈一会儿。 I'd like to speak to you for a moment. 5. 头上受了一击后，他昏过去了一会儿。 The blow on the head dazed him for a moment. 6. 所有的灯都闪了一会儿。 All the lights flickered for a moment. 7. 一会儿工夫骚动平息了下来。 Presently the tumult died down. 8. 医生一会儿就到。 The doctor will be here presently.

得看具体的语境啊，不同的语境会有不同的表达，光是字对字翻译，太不地道了，甚至可能是错的。

you play first或者 you first ，please

You go to play first.

You go on playing, I go out for a while

sometime通常用于将来的，有一天；sometimes是有时：some time 是有些时间；some times 好象很少见，应该是几次的意思吧一会儿的英文应该是：A while,A seconds A minute.如果是一会儿之后呢，就在这些词组前面加after.( 我是英语科代表拉^-^