It 句型归纳总结IIt 作形式主语的句型 It + be + adj (kind , wise , careless, clever ) + of sb to do sthEg: It is wise of him to make such a decision.他做出这样的决定是明智的。 It + be + adj(easy , safe , common , normal ) + for sb to do sth该句型中adj若为important, necessary, natural, possible, strange, vital, essential等可改为从句,从句用should+动词原形。.Eg: Its very dangerous for children to play with fire.It is important for us to learn English well. (= It is important that we (should) learn English well.) It + be
