you are difficult to do为什么是错的

the homework is difficult to do 为什么不用to be done~

在“主语+be+形容词+不定式”句型中,有时主语是不定式结构的逻辑宾语,这时应用主动形式表示被动含义。适合于此结构的形容词比较多,最常用的有amusing(有趣的), cheap(便宜的), dangerous(危险的), difficult(困难的), easy(容易的), important(重要的), nice(令人愉快的), pleasant(愉快的)等,例如:
　　That question is difficult to answer.
　　那个问题不容易回答。

C 试题分析：句意：--史密斯先生，为什么你总是让我做那么难得工作？--因为你能做这样的事情，没人适合这种工作。would将；should应该；can能；may也许。故选C。点评：本题难度适中。情态动词是近几年高考的热点，它们的用法非常多，需要考生平时多做练习加以巩固。这里需要区分它们的用法及意义。即学即练：It is usually warm in my hometown in March, but it ____ be rather cold sometimes.A. must B. can C. should D. would解析：B。句意：通常在我的家乡三月是非常暖和的，但是它有时相当地冷。

为你解答:
1.You are difficult to do... 这个句型不一定是错误的。看情况吧。
例如:You are difficult to get on/along with.(你这个人难以相处。)
2.It is diffcult for sb to do sth.(某人做某事有困难。)
例如:It is difficult for him to solve the problem.
3.have some difficulty in doing sth.(注意这里的difficulty是不可数名词)
例如:He had some difficulty in finding her house.
4.have some difficulties with sth(这里的difficulties是可数名词。)
例如:He had some difficulties with his pronounciation.

如果这样子写的话就成了＂你是困难的＂而其实你想表达的是＂做某事对于你来说是...的＂你们老师教的方法是用it做形式主语，to do不定式做真正的主语，避免头重脚轻的现象。
希望我的回答可以帮助到你，望采纳！

it是形式主语，真正的主语是后面的不定式，这是英语在表达上避免头重脚轻，固定的习惯用法

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凉州区15962641684： You are difficult . 意思是咋样的啊?？
真须黄龙： 你很难沟通

凉州区15962641684： It+be+形容词+for sb+to do It+be+形容词+of sb+to do 怎么区分呢? - ？
真须黄龙： 两者的区别体现在其中形容词的修饰对象上,可以此区分. 1.It is+adj+of sb+to do sth 中形容词(adj)修饰的是人(sb),侧重表示的是这个人的品质. 例子:it' is kind of you to help me.意思是你能帮我太好了. 其中kind可以翻译为善良的,好...

凉州区15962641684： It's +adj of sb to do sth 和 It's for sb to do sth有什么区别? - ？
真须黄龙： It is+adj.+of sb. +to do sth中的adj.跟sb.有关, 这个adj.是用来形容sb.的, 表示某人这么做真是太adj.了. 你会发现在这个句型中你把sb.和adj.提出来可以造个句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 ...

凉州区15962641684： it is foolish of you to say so in public. 为什么不用 it is foolish for you - ？
真须黄龙： 句式:it is adj.(形容词)of/for sb. to do.of和for在这个句式中使用区别要点如下:you are foolish to say so 你这么说很愚蠢,构得成这样的结构(即foolish这个形容词 可以作sb的表语)用of例:It is kind of you to help me. = You are kind to help me.另: It is difficult for you to study maths. 你学习数学很困难构不成 you are difficult,即difficult不能作sb.的表语,即用for

凉州区15962641684： 英语,【You are really difficult !】(你真难缠!)对吗? - ？
真须黄龙： 用You are so difficult更好 如果要表示你真难缠的话也可以用You are so unreasonable!

凉州区15962641684： It was very kind ( )them to meet me at the railway station.答案给of,为什么,为什么不能用for, - ？
真须黄龙： It's + adj. + (of / for) sb to do sth. 译作“(某人)做某事是…的”.It 是形式主语,不定式结构是真正主语.of / for后面的sb是不定式的逻辑主语.1. 当形容词是可修饰人的形容词,即sb和adj.有主系表关系时,sb前用of.而且多指某人的品质方...

凉州区15962641684： Can forget why you are so difficult 什么意思 - ？
真须黄龙： 楼主想表达是“为什么忘记你是如此困难”吧?是这样说的 Why it is so difficult to forget you

凉州区15962641684： 如果你难以做出决定,你最好向你的父母求援.用英文翻译 - ？
真须黄龙： 如果你难以做出决定,你最好向你的父母求援: If you can't make a decision, you'd better ask your parents for help很少人习惯开着灯睡觉: Few people used to sleep with the light on

凉州区15962641684： be - difficult - in - doing - sth是什么意思 - ？
真须黄龙： be difficult in doing-sth 做某事有困难. 例句1.And, of course, so surrounded by admirers, she must be difficult in her choice. 追她的人当然很多,她都挑花了眼.2.This kind of behavior would be difficult in a system with a freer media and anindependent judiciary. 在一个媒体更自由而司法权更为独立的体系中,发生这类行为会较为困难.

凉州区15962641684： You are my life is difficult to forget 什么意思？
真须黄龙： 这句话有语法错误哦~~~ 按照字面来讲,意思应该是你是我生命中难以忘怀的记忆. 但是我建议改成:you are difficult to forget in my life. 或者优美一点:you are the sweet memories that i can not forget in my life.(你是我生命中无法忘怀的甜蜜回忆.)