it-is-adj-for-sb-to-do-sth

与It is+adj+for sbto do sth It is+adj+of sbto dosth中的.跟有关，It is+adj.+of sb.+to dosth adj sb.这个.是用来形容.的，adjsb表示某人真是太了.adj.而表示做某事对某人来说很It is+adj.+for sb.+to dosth adj.这里的是修饰.的adj.dosth表示做某事真是太.了adjIts verykind of/for youto helpme.Its cleverof/for youto workout themaths problem.Its verydangerous for/of childrento crossthe busystreet.Its difficultof/for usto finishthe work.It iscareless of/for himto loseso manythings.Its veryimportant for/of youto practiseyour English.It isnecessary for/of youto learnfrom others.It isimpossible for/of youto getthere insuch ashort time.It isimpolite of/for youto playtricks onyour teacher.It ispossible for/of meto spendone hourfinishing thejob.It isimportant for/of youto studyhard.It iswise ofthem to turn down the suggestion.他们很明智，拒绝了这个建议Itiswise forthem toturn downthe suggestion.他们拒绝这个建议是明智的前句强调是的；后句强调是的them wisetoturndownthesuggestion wise。