passive voice--no one can do anything to help you.怎样做?

defining clause/ non-defining clause
－A defining relative clause gives essential information about the noun or noun phrase it modifies,without which the sentence wouldn't make sense as the listener or reader would not be able to identify the noun in the sentence:
The hotel that we stayed in wasn't bad.('that we stayed in' tells the listener which hotel we are talking about; it defines the hotel)
'Who','whose' and 'that' can be used for people.'Which' 'whose' and 'that' can be used for things.
－A non-defining relative clause gives extra information about a noun or noun phrase and has commas at both ends:
My sister,who lives in France,is coming to stay with me next week.('who lives in France' is not essential,which means that I only have one sister and she does not need to be defined by the relative clause)
'Who' and 'whose' are used for people.'Which' and 'whose' are used for things.'That' cannot be used in a non-defining relative clause.
Passive Voice
A passive construction occurs when you make the object of an action into the subject of a sentence.That is,whoever or whatever is performing the action is not the grammatical subject of the sentence.
Once you know what to look for,passive constructions are easy to spot.Look for a form of "to be" (is,are,am ,was,were,has been,have been,had been,will be,will have been,being) followed by a past participle.(The past participle is a form of the verb that typically,but not always,ends in "-ed." Some exceptions to the "-ed" rule are words like "paid" (not "payed") and "driven." (not "drived").Here's a sure-fire formula for identifying the passive voice:
form of "to be" + past participle = passive voice

被动语态.
Passive指被动,相对active
voice这里指语态.
即将谓语的宾语/受动对象作为句子的主语.
举例：
中文：老婆打了丈夫.-主动语态
丈夫被老婆打了.-被动语态.
英文：The wife beat her husband.-主动
The husband was beaten by his wife.被动.
诚如所见.当谓语的受动对象成为主语后,施动对象即谓语的实施者在句子中的出现必须使用by-相当于中文中的被.此时by...作为补语.

1 Tom was chose to be our head by all of us
2 History is made by people
3This thing is called MP4
4the telephone was invented by Bell in 1876
5 His wife was met by him at the airport
6 The letter was sent by Miss Smith last week.
7The house is cleaned by her every week

Passive Voice被动语态
1）pay the expenses
The expenses were paid yesterday.
2)sign the lease
The lease is signed by these two parties.
3)send the dishes to
These dishes have been sent to his family.
4)take sb's order
His order was taken quickly.
5)cross A off B
A is crossed off from B.

被动语态中,要变成过去分词形式的单词是谓语动词,而此句中的谓语动词是let,let的过去分词形式就是其本身.限于let sb do sth.,go只能用原型.
不能用于被动语态的词：happen 、take place、 appear 、disappear 、fit、 belong to、grow up 、raise 、rise
都是初中学的,都忘了,这是百度搜的.

My cats are always chased by your dogs.

We enjoyed the holiday last month.
The holiday was enjoyed by us last month.
I have asked Brown the question.
Brown has been asked the question by me.
Women ofhen talk about food and clothes.
Food and clothes are often talked about by women.

a picture is drawn by Mary everyday.
a glass of milk is drunk by Peter every morning.
a movie is seen by me every month.
Peter is called very often.
the windows are cleaned in our school.
his bills are paid by peter on time.
a picture is being drawn by mary now.
milk is being drunk by them at the moment.
a movie is being seen by me at present.
Peter is being called by someone right now.
Look! the windows are cleaed by somebody in our school.
Listen! the piano is being plyed.
a picture was drawn yesterday.
a glass of milk was drunk light night.
a movie was seen yesterday.
Peter was called an hour ago.
the windows are cleaned in our school just now.
his bills was paid last week.
a picture was being drawn
a glass of milk was being drunk by Peter
a movie was being seen by me
Peter was being called.
the windows iwere being cleaned n our school.
a cake was being made.
a picture has been drawn already.
some milk has just been drunk
this movie has been seen twice by me.
Peter has been called.
the windows have been cleaned in our school.
all his bills have been paid
a picture will be drawn soon.
our grandmother shall been visited tomorrow.
this movie will be seen later.
Peter will be called.
the windows will be cleaned in our school.
all his bills will be paid.

1 You have to see it to believe it.
It has to be seen and believed by you.
2.We know that you were in town on the night of the crime.
You are known by us that you were in town on the night of the crime.
3.Who wrote it?
Who was it written by?

1时态
2被动语态
3条件句
4不定式
5关系从句
6忠告信

第一句是不是你打错了,好像有问题,那个they不应该是放在前面,应该是你自己后面写的
2：That steep hill are used for ski junping by them.
3:The money for our tickets were refounded by our tour guide
4.Many people are attracted by the climbing
5:The witness said that the nacklace would be easier to identify from the design by him.
6:A rectangle with the dimensions 5cm*3cm can be divided into a square and a smaller rectangle by youself.
作文太麻烦了.你不给我分,我不帮你写.哇哈哈哈

Passive Voice（被动语态）.被动语态由"be的相应形式＋及物动词的过去分词"构成,表示被动关系,即主语为动作的承受者.某些表示状态或特征的及物动词如become,contain,cost,fit,have,lack,resemble,suit等没有被动语态形式.

1.The news was announced by the chairman.
2.I saw the post was hit by the car.
3.These problems had to be thought over by them.
4.Bicycles are not left by people in the hall.
5.His behavior can't be put up by me.