can i help you?有什么需要帮忙的吗 商店的一般用语
nice to meet you 见到你很高兴
it's very cheap 这很便宜
this pair of shoes suits you very well 这双鞋很适合你
how about this pair 这双怎么样
how about this blue one ?这双蓝的怎么样?
that is big for you ,try this small one 那双对你来说太大了,试试这个小点的