翻译关于比较级和最高级的句子！！！！！！！！！！！！！！！！

若北翻译的还可以接受。

不过，太机械了。
首先，第一句的丽丽的橙汁，根本不合适用Lily's，建议用have结构改写成：Lily has less orange juice than Lucy.
第二句没有什么问题。
第三句中,in doing homework，如果不是考四六级英语作文，这么骗字数实在没有必要，on homework就万事大吉了。另外，这句结构也不太好。I spend less time on homework than Lily (does).
第四句容易产生歧义，healthy and delicous如果用于否定句，那么往往指的是两者不可兼顾，最好不要用doesn't know。另外，饭菜，用foods不合适，因为那指各种食物。所以这句话可以改成：His cooking is neither healthy nor delicious.或者也可以贴近原文点，He never cooks any dish that is healthy or delicious.
第五句基本没有问题。不过They meet twice a week and always have a good talk with each other可能更好点。尤其讨厌用了meet还来个together !

Lily's orange juice is less than Lucy's
School life in the USA is different from that in the UK.
The time I spend in doing homework is less than LiLy does.
He doesn't know how to cook healthy and delicious foods.
They meet together twice a week and talk with each other happily.