专题一重点短语
in the picture in English
at a good price school trip
what color from A to Z
ID card telephone number a picture of... a set of keys under the table next week
eating habits healthy food after class at night
lots of every day
South Africa between...and ... either ...or.... living room
no problem pay phone
right now post office
police station across from
in front of short hair
curly hair long hair straight hair around the world a little a large bowl of
in the end the same way
first of all on time
kind of dining hall
all in all the number of different kinds of a symbol of
high school quite a lot
not...at all so...that...
动词短语
Excuse me call sb. at
think of think about
take to bring to
play basketball play the piano have math speak English
be good at be good with
help (sb.) with sth help sb. (to) do sth. talk to/with talk about put...into... make friends
on weekends go to school
get up get dressed
eat breakfast take a shower
do one’s homework take a walk
take the subway ride a bike
drive a car by bike
come true listen to......
go out make (one’s) bed be strict (with sb.) follow the rules be in (great) danger get lost
cut down (be) made of
read newspapers go to the movies call (sb.) back be on vacation take photos take a message spend time go along
turn left/right wear glasses
be of medium height be of medium build
take one’s order would like to do
make a wish blow out
come true get popular
cut up put on
have fun be interested in...
go boating stay up
study for run away
shout at shout to
put up fly a kite
wake...up move into
go away
专项练习：
一、根据句意，填出正确时态的动词短语。
（一）关于put的短语
1. I __________ my hat and left the house.
2. He __________ the fire.
3.They __________ their tent in the middle of a field.
4.Your room is untidy, __________ your things _______ .
（二）关于take的短语
1.When did the plane __________ ?
2.It was very hot, so I __________ my hat.
3.My job __________ most of my time.
（三）关于give的短语
1.I lent him some books last month and he ________ them ________ to me this morning.
2.He ________________all his books to the library.
3.He ________drinking a few years ago.
4.Please ________________ the homework to the students.
（四）关于call的短语
1.I _________ the post office yesterday.
2.I ____________ the doctor yesterday.
3.I’ll __________you _______tomorrow.
(五) 关于look的短语
1.I am ________________my pen.
2.Will you _________________the children for me please?
https://www.doczj.com/doc/1913230796.html,e and ____________my photograph album.
4. I _________________the window. It was dark outside.
5.When you do not understand a word, you can ______ it _______in this dictionary. （六）关于pick的短语
1.He ________ _______a coin when he was walk in the street.
2.I'll ________you __________at the airport this evening.
二、选出下列正确选项
( )1. Please _______these test papers to each student.
A. give off
B. give out
C. give up
D. give in
( )2. All the students must ______your homework before ten o’clock, or you will be punished.
A. hand out
B. hand in
C. hand over
D. hand on
( )3. Would you please _______ the music a little, Lily? I am learning English.
A. turn up
B. turn down
C. turn off
D. turn on
( )4. Attention, please! The plane will _____ in a minute. Every passenger, please fasten(系) your safety belt.
A. take up
B. take off
C. take over
D. take down
( )5. This math problem is very difficult, so I can’t ______it ______.
A. work; out
B. point; out
C. set; up
D. try; on
( )6. If you don’t know the meaning of the word, you can _______ it _______ in the dictionary.
A. look; up
B. look; into
C. make; up
D. dress; up ( )7. --What does your mother _______?
--She is tall and beautiful.
A. look after
B. look like
C. look at
D. look for
( )8.--Shall I take you to the shopping center after school?
-- No, thanks. My father said he would ______ on his way home.
A. look for me
B. pick me up
C. let me down
D. take after me ( )9.—Why don’t you _______the correct spelling of the word?
—I’m sorry. I don’t have a Chinese-English dictionary at hand.
A. look for
B. look down
C. look up
D. look at ( )10.Tom, ______ your sunglasses. The sun is so bright.
A. put on
B. put up
C. put away
D. put down
( )11.—Could I speak to Lily, please?
—______ a minute. I will call her at once.
A. Hold on
B. Pass on
C. Put on
D. Hold back ( )12.—Could you come to my home this weekend?
—I’m afraid I can’t. I_____ look after my grandmother in hospital.
A. used to
B. have to
C. prefer to
D. belong to
专题二人称代词，指示代词，冠词
一．人称代词
1.英语人称代词表格
2.人称代词的用法
1）作主语，用主格
_________（她）likes playing basketball.
_________(他们)go to school at 8 o’clock.
_________(我们)are watching TV now.
注：几个人称代词连用时的位置关系：几个人称代词同时作某一成分时，应将第二人称放在最前面，第一人称放在最后，如：
You,she and I are good friends.
2) 作宾语，放在动词或介词后，用宾格形式。如：
Yesterday his father bought ______(他)a new bike.
I will go shopping with _______(她)next Sunday.
3)作表语用宾格。如：
The man in the photo is ______(我).
二．指示代词
指示代词包括this, that, these, those,它们在句中既可作主语，也可用作形容词作定语。一般来说，this,these表“近指”，而that ,those表“远指”，单数用this,that,复数用these,those.如：
_____(这)is Rosa.
_____(那些)are my friends.
_____(这些)men are my teachers.
注：these/those用于疑问句时，答句一般用they代替。This/that用于疑问句时，答句一般用it代替。
What’s this? _____ is a book.
What are these? _____are books.
1. 指示代词用作替代词
有时为了避免重复，that可用作替代词，用以替代前面提到过的人或事物，如前面名词是复数则用those来替代。如：
The weather of China is much hotter than _____of Japan.
The cups made of glass cost much more than _____made of plastic.
2. 在打电话时，通常用this指自己，用that指对方。如：
Hello，_____is Li Ming speaking. Who’s _______?
在英文中介绍人时，也用this.如：
_____is Mary, ______is Tom.
三.冠词
冠词是一种虚词，本身不能单独使用，只能放在名词（或某些代词）前帮助说明这个名词（或代词）的意义。冠词分不定冠词和定冠词两种，也就是a/an和the.
1. 不定冠词a/an的用法。
不定冠词a通常用于单数可数名词前，而an则用于以元音音素开头的单词前。
(1) 不定冠词a/an表示数量，与one的意思相近，但数的概念没有one强烈。（a 用在以辅音音素开头的名词前，an用在以元音音素开头的名词前）如：
_____egg _____English book
_____umbrella _____dog
(2) 不定冠词还有“每一”的意思。如：
We have five English lessons _____week.
我们每周上五节英语课。
(3) 表示某人或某物，但不具体说明。如：
I saw _____in the tree. 我看到树上有只鸟。
______ friend from Beijing stayed in the hotel.一位来自北京的朋友待在宾馆里。
(4) 用于某些固定短语
a bit一点 a lot of许多 a few几个in a word总之have a good time玩得痛快make a face做鬼脸
give sb. a hand帮忙have a picnic野餐
2. 定冠词the 的用法
(1) 定冠词the 特指某人或某物，时常与带有各种修饰语的名词连用。
Please give me _______on the bed. 请把床上的手表给我。
________bag on the table is Jim’s. 桌上的书包是吉姆的。
(2) 指说话双方都知道的人或事物。如：
Please open ______door.请把门打开。
Let’s meet at ________cinema.我们在电影院见面。
_________English teacher is coming. Be quiet！英语老师来了，安静。
(3) 用在上文提到的人或事物的名词前，如：
Long long ago,there was an old man with a dog. _____dog was very old. One day ,____dog died. ______old man felt very lonely.
很久很久以前，有一个老人，他有一条狗，这条狗很老了。一天，狗死了。老人感到非常孤独。
(4) 用在世界上独一无二的事物，或表示方向，方位的词前。
in __________________ 在太阳下on_____________________在地球上
on___________________ 在月球上in____________________在世界上
in_____________________在东方in_____________________在南方
in____________________在东南方in___________________在西北边
in_____________________居中on___________________在右边
(5) 用在乐器名词前。如：
She likes playing ________________.她喜欢弹钢琴。
(6) 与部分形容词或分词连用，表示一类人或物。如：
the young年轻人the weak弱者the old老人the rich富人
the living活着的人the dead死人the beautiful美丽的事物the blind 盲人
专项练习：
一．填空
1. Either you or ____am going to America.
2. Could you record the football game for me? I can watch ____later.
3. I can’t find my pen,could you help _____find it?
4. He is _____youngest of the two boys.
5. at____same time in _____middle of
at _____moment have _______talk
_______young man is waiting for you.
_______June 1st is the Children’s Day.
_______winter in 2010 was very cold.
二、选择
( )1. --Do you enjoy your stay in China, Jim?
--Yes, I’ve had ____wonderful time.
A./
B.a
C.the
D.an
( )2. --Do you often play ____soccer with your friends?
--No,I don’t like sports. I often play _____piano in my free time.
A.a,the
B.the;/
C./;the
D.the,a
( )3. --What do you want to be in the future, Nick?
--I want to be ______pilot. It is _____exciting job.
A.a;a
B.a;an
C.the;an
D.a;the
( )4. Don’t give him too much homework. He is just _____eleven-year-old boy.
A.a
B.an
C.the
D./
( )5. It is a good habit to go to _____bed early and get up early.
A.a
B.an
C.the
D./
( )6. --Let’s play_____soccer.
--I don’t have _____soccer ball.
A./;a
B.the;a
C.a;the
D./;the
( )7. --Would you mind cleaning your room?
--OK,I’ll do it in____minute.
A.the
B.a
C.an
D./
专题三名词
一．可数名词和不可数名词
所谓可数名词指的就是在数量上可以计数，可以数出数量的事物；
所谓不可数名词是指不能以数目来计算，不可以分成个体的东西。
可数名词前可以加上冠词a/an。而不可数名词前面是不可以直接加的。
可数名词变为复数形式有如下变化规律：
a．一般情况下，直接加-s，如：book-books, bag-bags, cat-cats, bed-beds ；
读音：清辅音后读[s]，浊辅音和元音后读[z]。
b．以s. x. sh. ch结尾，加-es，
如：bus-buses, box-boxes, brush-brushes, watch-watches ；读音：[iz]。
c．以“辅音字母+y”结尾，变y为i, 再加-es，
如：family-families, strawberry-strawberries ；读音：[z]。
d．以“f或fe”结尾，变f或fe为v, 再加-es，
如：knife-knives ，thief-thieves；读音：[z]。
e．以“o”结尾的词，分两种情况
1）有生命的+es 读音：[z] 如：mango-mangoes tomato-tomatoes hero-heroes
2) 无生命的+s 读音：[z] 如：photo-photos radio-radios
f. 不规则名词复数：
man-men, woman-women, policeman-policemen, snowman-snowmen, fish-fish, policewoman-policewomen, mouse-mice, child-children, tooth-teeth, people-people. 除此之外，还有一部分名词单复数同形，如：
fish鱼，deer鹿，sheep绵羊Chinese中国人
有一些名词则只有复数形式：
trousers裤子，pants裤子，shorts短裤 glasses眼镜，compasses圆规，scales天平，pliers钳子，clips剪子
“某国人”的复数有三种类型：
（1）Chinese, Japanese, Swiss 三国人单数复数同形，不需加s；
（2）Englishman, Frenchman复数要把 man 变为men；
（3）其他各国人以–an, -ian收尾的均直接加s。
（4）如：Americans, Australians, Indians等。
可依照这个口诀记忆：中日不变，英法变，其他”s”加后面。
不可数名词一般没有复数形式，只有单数形式，它的前面不能用不定冠词a / an 。不可数名词的量化：就是在不可数名词前面加上“数词+量词+of”，
比如： a piece of paper 一张纸 a cup of tea一杯茶
当量词可数，且前面的数词大于一时，量词需要用复数形式，
如: two cups of tea两杯茶two pieces of paper 两张纸等；
二．名词所有格
名词有三个格：主格、宾格和所有格。在英语中有些名词可以加“’s”来表示所有关系，带这种词尾的名词形式称为该名词的所有格，如：a teacher’s book。
名词加“’s”主要表示有生命的事物或自然界独一无二的某些空间和时间名词的所有格，如the world’s，the sun’s，today’s，yesterday’s等。
单数名词词尾加“’s”，复数名词词尾没有s，也要加“’s”。
例: the boy’s bag 男孩的书包 men’s room 男厕所
2. 若名词已有复数词尾又是s ，只加“’”。例 the workers’ struggle 工人的斗争
3. 凡不能加“‘s”的名词，都可以用“名词+of +名词”的结构来表示所有关
系。例 the title of the song 歌的名字
4. 在表示在某人处时，名词所有格的后面常不出现它所修饰的名词。
例：the barber’s 理发店
5. 如果两个名词并列，并且分别有’s，则表示“分别有”；只有一个’s，则表示“共有”。例： John’s and Mary’s room(两间) John and Mary’s room(一间)
专项练习：
一、写出下列名词的复数形式
单数复数单数复数单数复数单数复数orange class text monkey
piano child shelf bed
country family toy foot Japanese radio photo tomato
fox woman knife sheep
二、选择填空
1. ( )There______on the wall .They are very beautiful.
A. are photoes
B. are photos
C. is a photo
D. is photos
2. ( ) This car_____made in Shanghai.
A. is B .are C .were D .has
3. ( )There are four______and two_______in the group.
A.Japanese, Germen B Japaneses, Germen
C. Japanese,German C.Japanese, Germans
4. ( ) That’s________art book.
A. an
B. a
C. the
D. are
5. ( ) The boys have got_______already.
A. two bread
B. two breads
C. two pieces of bread
D. two piece of bread
6. ( )The old man wants __________.
A. six boxes of apples
B. six boxes of apple
C. six box of apples
D. six boxs of apples
7. ( )There_______two ______in the box.
A. is watch
B. are watches
C. are watch
D. is watches
8. ( )We should clean_______twice a day.
A .our tooth B. our tooths C. teeth D. our teeth
9. ( )The _____ meeting room is near the reading room.
A. teacher
B.teacher’s
C.teachers’
D.teachers
10.( ) In Britain _____ are all painted red.
A. letter boxes
B.letters boxes
C. letter box
D.letters box
11.( )There are_____ birds in that big tree.
A. hundreds of
B. five hundreds of
C. five hundred of
D. hundred of
12.( ) The woman over there is ______ mother.
A. Julia and Shelley’s
B. Julia’s and Shelley’s
C. Julia and Shelley
D. Julia’s and Shelley
13. ( )--Excuse me，where are _______ offices? ---Over there．
A. teacher’s
B. teachers’ C． the teacher’s D． the teachers’
14. ( ) We’ll have a _____ holiday. What about going to the West Lake?
A. two days
B. two-day
C. two-days
D. two day’s
15. ( )This is my dress. That one is ____.
A. Mary
B. Mary’s
C. sister
D. mother
三．用所给名词的适当形式填空。
How many________(sheep) are there on the hill?
2. There is some________(food) in the basket.
3. The baby has only two________(tooth) now.
4. There is a lot of________(water) in the bottle.
5. There are five________(people ) in his family.
6. Let’s take________(photo), OK?
7. I have lots of________(tomato) here.
8. The________(leaf) on the tree turn yellow.
9. The________(child) are playing games on the playground now.
10. Their________(dictionary) look new.
11. I see you have a few white________(hair).
12. They are________(woman) doctors.
13. Can you give me some bottles of ____ (orange), please?
14. There are many________(fox) in the picture.
15. I would like some apple________(juice). I am very thirsty.
四．翻译练习。
__________________________(李明的父母)work in a big hospital.
This is __________________________________(我妹妹的语文书)
__________________________________(双胞胎的卧室) are very nice.
______________________________(王平和王明的父亲) is a hotel manager.
Is this ___________________________________(你的好朋友的钢笔) ?
They are ___________________________________(Peter 和Sam的老师).
___________________________(教师节) is on September 10th .
___________________________________(学生们的桌椅) are very new.
专题四方位介词与时间介词的使用
介词是一种虚词，不能单独作句子成分，必须与名词或相当于名词的其他词构成介词短语，才能在句子中作成分。如：
The boy under the tree is my brother.(定语)
I put the books on the desk.(状语)
Our English teacher is from America.(表语)
Help yourself to some fish.(宾语补足语)
表示时间的介词
1. in用在世纪，年份，月份，上午，下午，晚上等词前。
in the twenty-first century，in 2013，in spring，in August，in the afternoon
2. at 用在钟点，夜晚，中午之前或某些词组中
在中午_____________ 在......岁时_____________
在这个时候_______________
3. on表示具体的某一天，后接具体的节日，日期，星期几或某一天的上午，下午或晚上，或用于有形容词修饰的某一天等。
On Monday on October 1st on the morning of May 10
在一个雪天_________________ 在八月一日的下午__________________
在星期二上午___________________
4.from ...to ...，意为从......到......
I will be free from 8:00 to 9:00 tomorrow.
We have classes from Monday to Friday.
表示地点方位的介词
1. in on at
in表示在国家，城市等大的地方或某一空间内，还可以表示“在....里面”；on 表示“在......上”；at用于小地方。如：
______China ______Shanghai ______the sky
______the table ______the road
______home ________the bus stop
2. in front of/ in the front of
in front of 在......(外部）的前面，in the front of 在......（内部）的前面。
Han Mei is in front of Li Ming.
The tree is in the front of the classroom.
3. 其他表示地点方位的介词或介词短语
在......后面___________
在......附近___________
在......之间___________
4. 介词from...to..., 从……到……
How far is it from Beijing to Shanghai.
Is this your first visit to the Great Wall?
常见的介词短语
listen to get to talk to be friendly to
write to arrive in arrive at be good at
at most look at at home at the moment
at work put on in the end in fact
be interested in be kind of think of be made of
a kind of a lot of help with ask for
learn from be from come from get off
专项练习：
一．选择填空：
( )1．Mrs. Brown came to China ____ 1996.
A．from B．of C．to D．in
( )2．The room was full ____ smoke after the big fire.
A．of B．with C．in D．for
( )3. Here are some presents ____ you ____ our best wishes.
A．to; with B. for; with C．of; about D．for; for
( )4. Both Mr Green and Mrs Green were born ____ June, 1956.
A．in B．at C．on D．for
( )5．The little boy is always interested ____ science.
A．with B．by C．in D．at
( )6．Li Lei often gets up ____ seven o'clock on Sundays.
A．on B．in C．at D．for
( )7．They arrived early ____ a Tuesday morning.
A．on B．at C．in D．of
( )8．--When were you born? --I was born ____ August 25, 1983.
A．on B．in C．at D．to
( )9. The classroom is quite different_______that one.
A. of
B. from
C. with
D. like
( )10．Let me show you the place ____ the map.
A．with B．on C．in
( )11．He got many gift________his birthday_______his friends.
A. on, from
B. in, of
C. at, to
D. from, for
( )12．The visitors ____ Japan arrived ____ Beijing Station last Tuesday morning.
A．from; at B．of; to C．from; to D．of; on
( )13．It's cold outside. Please__________your warm clothes.
A. put in
B. take off
C. put on
D. put up
( )14. Look, you'll see a bridge__________the river.
A. on
B. above
C. over
D. in
( )15. –Your coat looks nice, Is It________cotton? -Yes. It's________Shanghai.
A. made of, made by
B. made of, made in
C. made for, made in
D. made from, made by
二、用适当的介词填空
1．What's wrong ____ your watch?
2．One ____ the students is in the classroom.
3．I think the shop is closed ____ this time of day. 4．My father teaches English ____ a school.
5．We have lunch ____ the middle of the day.
6．You can buy some school things ____ your way home. 7．I was born ____ July 1, 1982.
8．Don't sleep ____ the open air.
9．I often help my mother _____ the housework.
10．It's time ____ school.
11．I have quite a lot ____ homework to do.
12．What's the time? It's half ____ seven.
13．Ducks are good ____ swimming.
14．What are you talking ____ ?
15．He is sitting ____ the front of the car.
16．The eraser was passed ____ one student ____ another. 17．Did you live ____ Beijing in 1997?
18．When did you arrive ____ the village?
19. Eating too much isn't good ____ your health.
20．I think Mary is ____ duty today.
21． Thanks ____ asking me to your party.
22．My watch is very different ____ yours.
23．What's the weather ____ today?
24．Let's go out ____ a walk, shall we?
25．I don't know which is the way ____ the park. 26．The people here are very friendly ____ us.
27．I felt a little afraid ____ my teacher.
28．Help yourselves ____ some fish, Lily and Lucy. 29．I'm sorry I'm late ____ the meeting.
30．Don't play ____ fire．It's dangerous.
31．He didn't go ____ bed until twelve o'clock.
32．If you break the window, you'll have to pay ____ it. 33．The glass is full ____ milk.
34．____ Mr Wang's help, I have passed the exam.
35．Please cut the metal ____ some pieces.
36．Are you interested ____ the film Titanic?
37．Hundreds ____ years ago, there was a village here.
专题五数词
数词就是表示事物的数量和顺序的词，分基数词和序数词两种。
一．基数词
表示数量多少的词是基数词，如：one, two, three等。构成方法如下：
1）从1－12分别由从one到twelve12个各不相同的词表示。
2）从13－19均以后缀-teen结尾。
3）从20－90的整十数词均以后缀-ty结尾。表示“几十几”时，个位和十位之间需加连字符，如twenty-one, thirty-two, forty-three等。
4）数字的写法和读法：
⑴十位与个位之间要加连字符“-”；
⑵百位和十位之间要加and；
⑶三位数以上的数，从个位往前数，每三位数加一个逗号“，”，从后往前数的第一个逗号代表thousand,第二个逗号代表million,第三个逗号是billion，注意这几个词不能用复数形式。
表示具体、准确的数目时，hundred, thousand, million等数词后不能加-s,
如：five hundred, six thousand, seven million等。
6）当hundred, thousand等数词与of连用，表示不具体、不准确的数目时，词尾须加-s。如：thousands of students, millions of trees
二．序数词
1）不规则变化：first第一, second第二, third第三
2）以-ty结尾的表示“几十”的基数词，先把y变为i，再加-eth 如：twenty-twentieth
3）表示“第几十几”时，十位数的“几十”仍用基数词，只把个位部分变成序数词就行了。
4）除上述情况外，均在词尾加-th，如ten--tenth one hundred--one hundredth 三．数词的用法
（一）表示事物的编号
基数词放到名词的后边,该名词一般要大写；序数词放到名词的前面，加定冠词。如：第一课Lesson 1/ the first lesson. Row 3/ the third row
（二）年、日、时刻表达方法。
“年”用基数词，“日”用序数词，前要加定冠词。读的顺序是月日年。
如：1999年5月2日读作：May the second, nineteen ninety。
（三）“时刻”用基数词表达，同时要注意以下两点。
1.表示“整点”时，在基数词后加o’clock;
9:00 o’clock.
2.分钟小于或等于30分钟的，用“分钟数＋past＋钟点数”形式；分钟数大于30 分钟的，用“到下一个钟点所差的分钟数＋to＋下一个钟点数”形式,也可以依次读钟点数和分钟数。
7:20 twenty past seven或seven twenty.
6:50 ten to seven
3.注意两个特殊的表示时间的单位词：30分钟用half，15分钟用a quarter，如：6:30 读作：half past six
5:45 读作：a quarter to six
6:15 读作：a quarter past six
(四）分数的表达方法
表示分数时，分子用基数，分母用序数，分子大于1，分母用复数。分数修饰名词时，后用of短语。如：
1/3 one third of teachers 3/7 three sevenths of the boys
1/2, 1/4分别用a half和a quarter表示。
（五）“基数词－名词－形容词”结构
“基数词－名词－形容词”只能用来放到名词前作定语。如：
She is a 3-year-old girl.
They live in a 30-meter-high building.
注：这种结构中名词不能用复数，同时只能作定语。用作表语时，不用连字符，
名词有复数。如：
Tony is 10 years old this year.
Tony is a 10-year-old boy.
中考从以下几个方面来考查学生对数词的掌握情况：
1. 基数词和序数词
Dick, it is the ________ time in ________ days that you’ve made the same mistake. A. two, three B. second , three C. two, third D. second, third (2007乌鲁木齐)
[解题技巧]
以此立意的试题要求考生能正确使用基数词和序数词：基数词用来表达事物的量；序数词用来表达事物的顺序。
2. 分数
It is said that the gravity(引力) on Mars is only about __________ of the gravity on earth.
A. three－eighths
B. third－eighth
C. three－eights
D. third－eight（2006苏州）[解题技巧]
以此立意的试题考查考生能否正确使用分数：分子在前用基数，分母在后用序数。分子大于一，分母用复数，分子与分母之间可以用连字符连起来也可以不用连字符，如two thirds或two-thirds；当分数修饰名词作定语时，后要跟of，如：two thirds of students 三分之二的学生。
3. hundred,thousand,million,billion等单位数词
－How many people will come to Beijing next year?
－It’s hard to say, ________ people, I think.
A. million of
B. millions of
C. three millions
D. three millions of (2007芜湖)
[解题技巧]
以此立意的试题考查考生能否正确使用hundred等单位数词。表示单位的数词用法分两种情况：1）当放在具体的数字后边，表示具体的“百、千、百万、十亿”时，不能用复数形式，可以直接修饰名词复数，如two thousand students；2）当表示大概的“几百、几千、几百万、几十亿”时，用“复数形式＋of”结构，前