有be hard to do sth的结构吗?

有be hard to do sth的结构吗? hard to do sth be hard for sb to do sth是什么意思? hard to do sth对吗 be adle to do sth与can do sth的区别请问be adle to do sth与can do sth有什么区别? I am hard to learn English.这句话的用法对吗?有 sb.+ be + adj.+to do sth 这个语法吗? be meant to do sth .有这样的短语么, 有没有be terrified to do sth的搭配 be to do sth和will do sth的区别 allow是to do sth还是doing sth?我知道有be allowed to do sthallowing doing sth和allow sb to do sth的区别 有没有be busy to do sth. 是hard to do sth 还是 hard doing sth be about to do sth的用法 be comfortable to do sth的用法 be wiling to do sth的同义词 make oneself/sth done和被动语态的be made to do sth有什么区别. be considered to do sth有这样的说法吗 还是只有consider doing sth see sb.do sth.的被动是be seen to do sth吗如题,还有有没有be seen do sth这种句式,