为什么这个feel后边从句是没有be动词的
I 主feel 谓it 宾good 宾to see you 宾语从句 (=it)
帮忙用这个句式造句It+be+形容词+that从句
It is+adj.+of sb. +to do sth中的adj.跟sb.有关,这个adj.是用来sb.的,表示某人这么做太adj.了．你会发现在这型中你把sb.和adj.提出以造个句sb. is(are) adj.如It‘s very kind of you to help me.把里面的sb.和adj.提出来可以发现you are kind是说得通的.而It is +adj.+for sb.+to do sth表示做某事对某人来说很adj.这里的adj.是do sth.的属性里面的sb.跟adj.没有直接联系如It‘s difficult for you to deal with the problem.你就不能说you are difficult了吧这就是怎么决定句子中的介词用of还是用for的方法若形容词是描述不定式行为者的性格、品质的，如kind，good，nice，right，wrong，clever，careless，polite，foolish等，用of sb.。
It’s very kind of you to help me. 你能帮我，真好。
It’s clever of you to work out the maths problem. 你真聪明，解出了这道数学题。
若形容词仅仅是描述事物，不是对不定式行为者的品格进行评价，用for sb.，这类形容词有difficult，easy，hard，important，dangerous，（im）possible等。
It’s very dangerous for children to cross the busy street. 对孩子们来说，穿过繁忙的街道很危险。
It’s difficult for us to finish the work. 对我们来说，完成这项工作很困难。
注 意 ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○of sb. 的句型通常都可转换为不定式作状语的句子，但for sb. 句型不可以。
It’s very nice of you to offer me a seat. = You are nice to offer me a seat. 十分感谢你给我让座。
It is careless of him to lose so many things. = He is careless to lose so many things. 他丢了这么多东西，真是太粗心了。
It’s very important for you to practise your oral English in daily life. 在日常生活中练习你的英语口语非常重要的。
这句话不能说成：It is very important of you to practise…在英语学习的过程中，大家会对句型It is+adj+of(for)+sb to do sth的掌握有些模糊，在运用中，是用of ... to do sth还是for ... to do sth 呢
我们可以从以下六点来区别使用它们。
一、of... to do sth只能用在句中作主语，且主语常用it代替；而for... to do sth除在句中作主语外，还可作表语、宾语、定语或状语。
例如： It is necessary for you to learn from others. 你必须向他人学习。
(主语) My suggestion is for you to go to Beijing University. 我建议你去念北京大学 。
(表语) I have a lot of work for you to do. 我有许多工作要你去做。
(定语) 二、for... to do sth在句中作主语时，其表语可以是形容词也可以是名词；而of... to do sth作主语时，只能接形容词做表语。
例如： It is impossible for you to get there in such a short time. 你在那么短的时间内到达那是不可能的。
It will be a mistake for you to miss the chance. 你错过那个机会将是个错误。
It was too foolish of you to do so. 你那么做真是太愚蠢了。
三、 of... to do sth在句中作主语时，句子只能是主语+be+表语；而for... to do sth在句中作主语时，句子既能是主语+be+表语，也可以是主语＋谓语＋宾语。
例如： It is impolite of you to fool your teacher. 你欺骗老师是不礼貌的。
It is possible for me to spend one hour finishing the job. 我花费一个小时去完成那项工作是可能的。
It will take one hour for me to finish the job. 完成那项工作将花费我一个小时。
四、 在for... to do sth结构中，不定式的逻辑主语可以是人或物，也可以是引导词there；而of... to do sth结构中，不定式的逻辑主语只能是人或物。
例如： It is important for you to study hard. 努力学习对你很重要。
It is a good idea for the book to be given to her. 把这本书送给她是个好主意 。
It is a pity for there to be any disagreement in the family. 家庭不和实为憾事。
It is wrong of you to tell a lie. 你说谎是不对的。
五、 在of... to do sth结构中，of后面的名词或代词与前面的形容词(kind, clever, foolish, selfish, polite, right, wrong, careful...)有逻辑上的主表关系;而在for... to do sth结构中，for后面的名词或代词与前面的形容词(easy, hard, difficult, possible, necessary, important, heavy...)没有逻辑上的主表关系。
例如： It is kind of you to lend me so much money. 你心肠真好，借给我那么多钱 。
It is hard for you to translate the sentence into English. 你把这个句子翻译成英语是有困难的。
但是，当这个形容词可用来说明of后面的名词或代词的性质时，easy, hard, difficult等词也可用于of... to do sth结构中。
The beautiful girl is easy to work with. 那个漂亮女孩很好共事。
六、 有些形容词(如nice ,right, wrong, good, wise 等)既可用于of... to do sth结构，也可用于for... to do sth结构中；但两者之间的强调重点不同，意义也有区别。
例如： It is wise of them to turn down the suggestion. 他们很明智，拒绝了这个建议。
It is wise for them to turn down the suggestion. 他们拒绝这个建议是明智的。
前句强调them是wise的；后句强调to turn down the suggestion 是wise的。
it+be+adj+forsb.+todosth.什么是形式主语
不定式或不定式短主语时,常用it式主语,避免头重脚轻,这时大多“It is + 形容词(+for sb.)不定式”结构.It is impossible for him to give up smoking.但也用于其它句型,如：It took Professor Chomsky near a decade to finish writing this book.值得注意的是：在It is adj for sb to do sth 句型中,如果做表语的形容词是表现人的内在的性质特点的,如：honest,cruel,warm-hearted,stupid,nice,kind,careful,considerate,selfish,mean(小气的）等,需用of sb to do sth.如：It is very kind of you to have come all the way to the airport to see me off.It is very careless of you to have made so many mistakes in this exam.
it is compulsory that...句型要用should do吗?
是的需要用should do，但是should 可以省略详细介绍如下：在形如“It is (was)+形容词（或过去分词）+that……”结构中,使用某些表示愿望、建议、请求、命令、可能、适当、较好、迫切、紧近、重要等形容词后的主语从句的谓语也用虚拟语气.其表达形式为should ＋动词原形或省略should直接用动词原形（美国英语中省去should）常用的形容词：* natural (自然的),appropriate (适当的),advisable (合适的),preferable (更可取的),better (更好的)* necessary (必须的),important (重要的),imperative (急需的),urgent (急迫的),essential (本质的),vital (必不可少的)* probable (很可能的),possible (可能的)* desirable (极好的)advisable（合理的）,compulsory（必须的）,crucial（紧急的）,desirable（理想的）,essential（必要的）,imperative（迫切的）,incredible（惊人的）,necessary（必要的）,possible（可能的）,strange（奇怪的）,urgent（紧迫的）.常用的过去分词(Past Participle):* required (需要的),demanded (要求),requested (被请求的),desired (要求)* suggested (建议),recommended (推荐)* orderd (命令)1.It is necessary that we (should 可省略,下同）have a walk now.(necessary,should + have) (表示有需要去散步)2.It was necessary that we (should) make everything ready ahead of time.(necessary,should + make) (表示有必要事先做好准备)3.It is required that nobody (should) smoke here.(required,should + smoke) (表示要求不要在此抽烟)4.It is important that every pupil (should) be able to understand therule of school.(important,should + be) (表示重要的是学生都能了解校规)5.It’s important that we (should) take good care of the patient.(important,should + take) (表示重要的是照顾好病人)6.It is natural that she should do so.(形容词natural,should+动词原形do)7.It is essential that these application forms be sent back as early as possible．这些申请表应尽早地寄回,这是很重要的.8.It is vital that enough money be collected to fund the project．重要的是募集足够的钱,为这个项目提供资金.9.It is desired that we（should）get everything ready this evening．希望我们今晚一切都准备就绪.注：在上述所列形容词后面用that引出的宾语从句中,谓语动词也要用虚拟语气.10.I don’t think it advisable that Tom be assigned to the job since he has no experience．汤姆缺乏经验,指派他做这项工作我认为是不恰当的.二、在It is ＋名词＋that…的主语从句中的虚拟语气在It is ＋名词＋that的主语从句中,常用虚拟语气,表示建议、命令、请求、道歉、怀疑、惊奇等.这类名词有：advice ,decision ,desire ,demand ,idea,motion ,order,pity ,preference ,proposal,recommendation ,requirement,resolution,shame,suggestion,surprise,wish,wonder等.⑴、It is my proposal that he be sent to study further abroad．我建议派他去国外进一步学习.
