be kind to do sth还是be kind to sb?

be kind to do sth还是be kind to sb? 是be kind to do sth 还是 be kind of doing sth?谢谢~我是想这么说 用在疑问句里的will you be kind to do 还是 will you be kind of doing??? be worth to do sth 还是be worth doing sth be scared to do sth还是be scared doing sth be glad to do sth 还是be glad doing sth be heard to do sth 还是 be heard doing sth? be suppose to do sth还是supposed A let B do sth变为被动语态,是B be let do sth还是B be let to do sth be accustomed to后面加do sth.还是doing sth? Attentions must be paid to do sth还是doing sth be worthwhile of doing sth.还是to do sth. 是be eager to 还是 eager to do sth 容易做某事 是easy to do sth 还是be easy to do sth 容易做某事 是easy to do sth 还是be easy to do sth may not able to do sth 还是 may not be able to do sth? be keen on后面加什么be keen on后面加doing sth;do sth;还是to do sth? be +形容词+to do something还是doing sth have sth.to do和have sth.to be down和have sth.down是have sth.to do和have sth.to be down意思相同,还是have sth.to be down和have sth.down相同?