5. We haven't decided yet, maybe you could recommend something to us.
我们还没有想好，或许你可以给我们推荐一些。
还能这样说：
We don't know what to order. Could you recommend some to us?
We are not sure what to order. What would you recommend for the main course?
6. I'd like to try some Chinese food.
我想尝尝中国菜。
还能这样说：
Maybe Chinese food is good.
I need some Chinese food.
谚语：
More die by food than famine.
饥饿而死的少，饱食而死的多。
7. What do you want for appetizer?
要点什么样的开胃菜呢？
还能这样说：
What would you like for your appetizer?
What do you want as starter?
8. What else would you like to order?
你还要点别的吗？
还能这样说：
Will there be anything else?
Is there anything else you'd like?
应用解析：
nothing else than 只不过；仅有；
something else again 另外一回事；另当别论