challenge sb to do sth还是do sth

是challenge sb 还是challenge to sb challenge sb to do sth还是do sth 英语问题求解challenge sb to do sthchallenge sb to do sth 和 challenge sb to sth是否有这两个短语 ,如果有区别是什么 It's up to sb to do take sb's place to do sth it's nice of sb to do it's adj for sb to do和of sb to do有什么不同 it's up to sb.to do sth. let sb to do sth和let's sb do sth的复数形式 某人代替某人做某事有几种说法我可不可以说sb.replace sb.to do sth.sb.substitue sb.to do sth.sb.take the place of sb.to do sth.sb.take one's place to do sth.sb.do sth.in place of sb.sb.do sth.instead of sb. 英语翻译It's hard for sb.to do sth.快 用It’s+形容词+of sb to do sth造句 it's very kind of sb to do sth 用it’s time for sb to do sth造句 It's +adj of sb to do sth 和 It's for sb to do sth有什么区别?It's +adj of sb to do sth 和 It's + adj for sb to do sth有什么区别？ 用“Its+adj+for sb to do sth”造句 翻译：It's very kind of sb. to do sth. it's kind of sb to do sth