9. I want to have a few people for a dinner in my house.
我想约人到我家吃饭。
还能这样说：
I want to invite several friends to eat with me in my house.
I would like to ask a few friends to have dinner in my house.
谚语：
Books and friends should be few but good.
读书如交友，应求少而精。
10. If the weather is fine, I will go to have a barbecue in the countryside.
如果天气好的话，我会去乡村吃烧烤。
还能这样说：
I will go to the country for a barbecue if it is fine.
If it is sunny, I want to go for a barbecue in the country.
11. I often have dinner with chopsticks.
我经常用筷子吃饭。
还能这样说：
I often use chopsticks to have my dinner.
I always have my dinner with chopsticks.
应用解析：
basket dinner 用篮子装的野餐；
boiled dinner 青菜烧肉；
eat one's dinners 学法律，准备当律师；
scratch dinner 临时准备的便饭
12. Which do you prefer, the Chinese food or Western food?
你想吃中餐还是西餐？
还能这样说：
Would you like to have the Chinese food or Western food?
Which one do you like better, the Chinese food or the Western food?
应用解析：
be food for fishes 葬身鱼腹；
convenience food 方便食品