it be adi to do sth 用这个形式造句

it be adi to do sth 用这个形式造句 it is +adi of sb to sth 与 It is +adj for sb to do sth 的区别有哪些,请指教, It+be+形容词+for/of sb to do sth it be+adj+to do sth什么意思?快@@@@!急@ 形式主语 it should be avoided to do sth. sth be worthwhile to do 还是用it be worthwhile to do be sure to do sth. be pleased to do sth be able to do sth be going to do sth be let to do sth? be sad to do sth. be made to do sth be obliged to do sth. be used to do sth. 英语翻译be good at doing sth.borrow sth.for sb.could you please do sth.get on with sb.have problem doing sth.it is time to do sth.make it possibie for sb.to do sth.offer sb.sth. be silly to do sth.= It's silly of sb.to do sth.还要例句的 用whant to do sth,try to do ,there be,not.but...,take sb sth,take to a place sth,造句it is time for sth,it is time to do ,be glad to do ,tell sb.about sth,be good at,be happy with,give sb.sth ,take care of,ask sb.to do,造句