句：Can you recommend a toy for a 10-year-old girl?

你能给我建议一下给10岁小女孩买什么玩具好呢？

A: Excuse me, can you recommend a toy for a 10-year-old girl?

打扰了，你能给我建议一下给10岁小女孩买什么玩具好呢？

B: With pleasure. How about some dolls?

乐意效劳！布娃娃怎么样？

A: Well, that's a nice choice.

嗯，不错的选择！

第二句：Can you help me to choose one?

你能帮我选一个吗？

A: I found it difficult to decide on the right design. Can you help me to choose one?

我发现很难决定合适的图案，您能帮我选一个吗？

B: How about this one?

这个怎么样？

其他表达法：

Could you give me some advice on buying the brands?

再买上你能给我些建议吗？