It is for sb to do sth 与It is doing sth的区别

it is+形容词+for sb+to do it is +形容词+for sb to do. It is bad for sb to do sth.It is bad for sb to do sth. sb.spends some time doing sth.it is+adj.+for sb.to do sth.it's up to sb.to do sth.造句 各两句 it is...for sb.to do...和it is...of sb.to do...的用法 it's+adj.+for sb.to do sth.若for改为to用法!it is adj.to sb.to do sth.是一定存在的,eg:it is helpful to us.it is good to me.it is adj for sb.to do sth.出现更多：it was too hard for me to carry them.请问在什么时候用to,for,这个 英语翻译It's hard for sb.to do sth.快 用it’s time for sb to do sth造句 用“Its+adj+for sb to do sth”造句 It's high time for sb.to do sth. It's adj .for sb.to do sth . It's+adj+for sb to do sth.表示? It‘s time for sb.to do sth同义句 It's+adj+for sb+to do sth是什么意思? it’s shocked还是shocking for sb to do It's necessary for sb.to do.(中文意思） 英语翻译使用It's adj for sb to do sth . it's adj for sb to do和of sb to do有什么不同