100分!回答的好有追加!关于英语!问一下at in on的用法!谢谢! 还有Be动词和助动词的用法!最好有例子!什么时候要用be,什么时候要用助动词!谢谢大家了! 再请概括一下七年级新目标英语1-6单元的
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100分!回答的好有追加!关于英语!问一下at in on的用法!谢谢! 还有Be动词和助动词的用法!最好有例子!什么时候要用be,什么时候要用助动词!谢谢大家了! 再请概括一下七年级新目标英语1-6单元的
100分!回答的好有追加!关于英语!
问一下at in on的用法!谢谢!
还有Be动词和助动词的用法!最好有例子!什么时候要用be,什么时候要用助动词!谢谢大家了!
再请概括一下七年级新目标英语1-6单元的重点和考点!谢谢!
100分!回答的好有追加!关于英语!问一下at in on的用法!谢谢! 还有Be动词和助动词的用法!最好有例子!什么时候要用be,什么时候要用助动词!谢谢大家了! 再请概括一下七年级新目标英语1-6单元的
一. in,on在方位名词前的区别
1. in表示A地在B地范围之内.如:
Taiwan is in the southeast of China.
2. on表示A地与B地接壤、毗邻.如:
North Korea is on the east of China.
二. at, in, on在表示时间上的区别
1. at指时间表示:
(1)时间的一点、时刻等.如:
They came home at sunrise (at noon, at midnight, at ten o’clock, at daybreak, at dawn).
(2)较短暂的一段时间.可指某个节日或被认为是一年中标志大事的日子.如:
He went home at Christmas (at New Year, at the Spring Festival, at night).
2. in指时间表示:
(1)在某个较长的时间(如世纪、朝代、年、月、季节以及泛指的上午、下午或傍晚等)内.如:
in 2004, in March, in spring, in the morning, in the evening, etc
(2)在一段时间之后.一般情况下,用于将来时,谓语动词为瞬间动词,意为“在……以后”.如:
He will arrive in two hours.
谓语动词为延续性动词时,in意为“在……以内”.如:
These products will be produced in a month.
注意:after用于将来时间也指一段时间之后,但其后的时间是“一点”,而不是“一段”.如:
He will arrive after two o’clock.
3. on指时间表示:
(1)具体的时日和一个特定的时间,如某日、某节日、星期几等.如:
On Christmas Day(On May 4th), there will be a celebration.
(2)在某个特定的早晨、下午或晚上.如:
He arrived at 10 o’clock on the night of the 5th.
(3)准时,按时.如:
If the train should be on time, I should reach home before dark.
三. at, in和on表示地点时的区别
1. at表示地点:
(1)用于指较小的地方.如:
I shall wait for you at the station.
(2)用于门牌号码前.如:
He lives at 115 Zhongshan Road.
2. in表示地点:
(1)用于指较大的地方.如:
He lives in Shanghai.
(2)虽然是很小的地方,如果说话人住在那里,也可用in.商店、学校、机关等,若看作一个地点(point)用at,若看作一个场所(place)用in.如:
I met him at the post-office.
I’m now working in the post-office.
3. on表示地点,一般指与面或线接触,意为“在……上;在……旁”.如:
The picture was hanging on the wall.
New York is on the Hudson River.
be是一个连系动词,它有自己不同的形式
现在时:be 进行时:being 过去时:was/were 过去分词:been
它的后面必须跟形容词或名词作表语,与之构成系表结构,充当句子的谓语.
i am a student主语:i 谓语:am a student(系表结构)
being是它的现在进行时态,一般不单独用,而是用于现在进行时的被动语态.(being+动词过去分词)
the bike is being repaired.单车正在被修理中.
it is being finished by him这正在被他完成中.
been是它的过去分词,也不一般单独使用,而是用于现在完成时、过去完成时以及需要它的句子.
i have been here for a long time.我已经到这里有一段时间了.
至于你的问题,这与你想表达的意思有关.
你的工作是什么?
what do you do? what is your job?
那么这里选用do和is有什么根据呢?
第一句里面,第二个do是指你做什么,也就是你的工作,就是一个实义动词.按中文说,what you do已经足够了.可是英语里面就不行,必须跟一个助动词,也就是do.
这里就有了一个结论:当句子中有动词时,我们就用助动词do或是does.如果没有动词时,我们就选用is或是are,也就是b“Be”除了原形的“be”之外,还有另外七种形式:am, is, are, been, being, was, were.
在句子中,“be”可以是主动词(The Principal Verb)或助动词(The Auxiliary Verb).
当主动词时,“be”在性质上属于接系动词(The Linking Verb), 后面要有名词、形容词、地方副词或短语作补足语(The Complement).例如:
1. The man is a science teacher.
2. Mary's new dresses are colourful.
3. I have been there before.
4. Mother is in the kitchen now.
这四个都是陈述句,可以变成疑问句,方法简单,把主语和“be”或助动词对换位置即可:
5. Is the man a science teacher?
6. Are Mary's new dresses colourful?
7. Have I been there before?
8. Is mother in the kitchen now?
当“be”要在祈使句中出现时,它必须借重助动词“do”或“don't”之助,如:
9. Don't be silly!
10. Do be obedient!
11. Don't be a fool!
“Be”有两种缩写法,如下:
12. He's not./He isn't.
13. You're not./You aren't...
但“am + not”的缩写法只有一个:
14. I'm not.
有人用“ain't”, 但这并不是标准英语.
谈过了“be”作主动词的功能,现在看看“be”作助动词时,有些什么用法:
1.“Be + 现在分词”以组成进行式时态(Continuous Tenses),如:
15. Tony's maid is washing his new car.
16. The children are playing in the field.
17. Samuel was eating when I came in.
18. We have been living here since 1959.
2.“Be + 过去分词”以组成被动语态(The Passive Voice),如:
19. Her money in the drawer was stolen.
20. A number of good jobs are taken up byforeigners.
21. David studied in Taiwan but has been trained as a language lecturer in America.
22. Can all the wonderful birds be found in our Bird Park?
23. The disobedient boy was told to stand out- side the classroom.
24. Steps are being taken to reduce traffic con- gestion during peak hours.
25. Dishonest students will be immediately dealt with.
当陈述句的谓语是实义动词时,助动词do通常用于疑问句和否定句中.如:
I go to school every day.
我每天上学.
Do you go to school every day?
你每天都上学吗?
I don”t go to school every day.
我不是每天都上学.
另外,助动词do还可用于强调句中,用于强调谓语动词.如:
将助动词do及do 的相应形式放于动词前,而动词要用原形.又如:
I did tell him.
我的确告诉他了.
He does like playing football.
他的确喜欢踢球.
其余时候do作动词原形,表示做.
.助动词是:协助主要动词构成谓语动词词组的词.(Auxiliary Verb).被协助的动词称作主要动词(Main Verb).
助动词自身没有词义,不可单独使用,例如:
He doesn't like English. 他不喜欢英语.
(doesn't是助动词,无词义;like是主要动词,有词义)
2)助动词协助主要动词完成以下功用,可以用来:
a. 表示时态,b. 表示语态,c. 构成疑问句,
d. 与否定副词not合用,构成否定句,e. 加强语气,
最常用的助动词有:be, have, do, shall, will, should, would