这里小编给大家分享一些difficult后面加什么介词（共含6篇），方便大家学习。同时，但愿您也能像本文投稿人“娜迷鑫动”一样，积极向本站投稿分享好文章。
用法：
1、difficult的基本意思是“难的”,指难以做到的、难以解决的、难以理解的、难以承受的.事物,多用于智力或情感方面,侧重需付出大量思考或运用技巧方能解决。引申用于修饰人时表示“难以对付的,不易取悦的”; 用于指境遇时表示“尴尬的”。
2、difficult可用作定语、表语或宾语补足语。
（1）用作定语 ～+ n.
English is a difficult language to learn.
英语是一门难学的语言。
Mathematics is regarded as a difficult subject.
数学被人认为是难科目。
（2）作表语时,后面可接介词of或to引起的短语,也可接动词不定式,句子的主语是动词不定式的逻辑宾语。
We had hoped that we would be able to leave tomorrow, but it's beginning to look difficult.
我们原希望明天可以出发,但是这事开始显得困难起来。
Nothing is difficult to a man who wills.
世上无难事,只怕有心人。
（3）用作宾语补足语
I found English difficult at first.
起初我发觉英语难学。
That made the subject difficult of investigation.
那使这问题不易探讨。
3、difficult的意思是“使人感到困难的”,而不是“人感到困难的”,因此一般不以“人”作主语,而如以动词不定式作主语,则常用于形式主语结构。
She of all people should know the answer to that.
在所有的人中，唯有她最应知道那个问题的答案。
I'd like to come on to that question later.
我想以后再讨论那个问题。
That is no way to treat another human being.
那绝不是对待他人的.方式。
Had I known that I would never have come.
要是早知道，我绝不会来的。
The need to communicate is a key characteristic of human society.
需要交流是人类社会最重要的一个特征。
at的用法
1、表示时间：在...时刻，在...点钟，在...岁(时)
at noon 在中午 at midnight 在半夜
at seven o'clock 在7点钟 at dawn 在黎明时
Children begin to go to school at the age of seven.
孩子们7岁开始上学。
2、表示地点：在...(地点)，常用于小地方。
After a long walk they arrived at a farmhouse at last.
经过长途跋涉，他们终于到了一家农舍。
3、表示位置：在...旁边。
The school bus will be ready at the gate at eight tomorrow.
明天8点在校门口有校车等候。
4、表示方向。
He aimed at the little bird.
他瞄准那只小鸟。
5、表示状态。
The two countries were at war then.
那时两个国家正在交战。
6、表示引起某种情绪的原因。
We were sad at hearing such bad news.
我们为听到这样的坏消息而悲伤。
7、表示速度、价格等。
The car runs at a speed of 50 miles an hour.
汽车以每小时50英里的速度前进。
使用被动语态应注意：
1.不及物动词无被动语态。
What will happen in 100 years.
The dinosaurs disappeared about 65 million years ago.
2.有些动词用主动形式表示被动意义。
This pen writes well.
This new book sells well.
3.感官动词或使役动词使用省略to的动词不定式，主动语态中不带to ，但变为被动语态时，须加上to 。
例：make somebody do something→somebody+ be +made to do something
see somebody do something→somebody +be +seen to do something
A girl saw my wallet drop when she passed by.→My wallet was seen to drop by a girl when she passed by.
The boss made the little boy do heavy work.→The little boy was made to do heavy work by the boss.
4.如果是接双宾语的.动词改为被动语态时，直接宾语(物)作主语，那么动词后要用介词，这个介词是由与其搭配的动词决定。
He gave me a book.→A book was given to me by him.
He showed me a ticket.→A ticket was shown to me by him.
My father bought me a new bike. →A new bike was bought for me by my father.
5.一些动词短语用于被动语态时，动词短语应当看作一个整体，而不能丢掉其中的介词或副词。
We can't laugh him. →He can't be laugh by us.
He listens to the radio every day. →The radio is listened to by him every day.
The nurse is taking care of the sick man. →The sick man is being taken care of by the nurse.
More and more people are surviving heart attacks.
越来越多的人在心脏病发作后存活下来。
More and more criminals will agree to plea-bargain.
越来越多的.罪犯会同意接受庭外和解。
The weakness of his regime is showing more and more.
他政权的疲弱性日益显露。
They live on the floor below.
他们住在下一层楼。
They live on the south coast.
他们住在南海岸。
How can anyone live on such a miserable wage?
这么少的工资让人怎么活呀？
They live on a farm somewhere out in the wilds.
他们住在边远地区的一个农场里。
They live on the outskirts of Milan.
他们住在米兰市郊。
