?对某人很好

... each other 彼此 be nice to sb. 对某人很好 two hours a day 一天两小时 ...

?对人好

... want to go to sleep想去睡觉 be nice to sb对人好 be friendly to sb对人友好 ...

?对某人好

... be going to 将要做某事 be nice to sb. 对某人好 be kind to sb. 对某人好 ...

?对某人友好

nice and(接形容词或副词，多表满意或赞赏)很；挺 be nice to sb.对某人友好 I didn’t like the speech，but at least it was nice and short.我不喜欢这篇演说，但它还算短小精悍。