it is to be +形容词 和 it is +形容词 有何区别?

it is to be +形容词 和 it is +形容词 有何区别? it + be +形容词+ doing 可以和it be 形容词 to do 如 it is great seeing you again和it is great to see you again? 怎样区分it is +形容词+to和it is +形容词+for? 是不是英语中所有的形容词都可以用it is + 形容词+that 和it is + 形容词+to这两种句型?如果不可以的,it is + 形容词+that 中的形容词用哪种? it is + 形容词+to 中的形容词用哪种?谢谢! it +形容词+to do sth 和it is +形容词+to do sth 有什么区别? i find it hard to keep a dog hard 是形容词,为什么前面没有be?不是 it is adj to do 关于be going to 和be going＋形容词的问题有这样一个句子：I bought the bread last week.It ___stale.You'd better not take it now.A:is going B:was C:had been D:is about to我查了一下,be going to表示近期或者可能要发生的 It is+形容词+for sb+to do和It is+形容词+of sb+to do的区别 I find it difficult to be a good teacher.和I find it is difficult to be a good teacher.有什么区别?第一句的句子成分是什么？ It is not good to be I() for school. I think it is going to be colder later________ I think it necessary to buy a big English-Chinese dictionary.要加“is,necessary不是形容词吗?怎么会加在名词”it“后面,不用加be动词吗?那如果加be动词句意会有变化吗? it is+形容词+for sb+to do It is + 形容词 + to do 句式造句 it is +形容词+for sb to do. 不定式做主语It+be+形容词+for sb.to do sth 和 It+be+形容词+of sb.to do sth两者有什么区别吗? 用It is+adj for sb.to do sth.和let sb do sth和be late for be late to do sth 这三个句式每个造句5个adj形容词sb某人sth某物 I think it wrong to tell a lie.这里it后面为什么没有is,wrong是形容词还是副词