⑴ 初中英语全讲解
动词不定式具有名词、形容词和副词的特征，因此，在句中可以作主语、表语、宾语、宾语补足语、定语和状语。
1.常跟不定式作宾语的动词有want(想、要)，love(喜欢)，begin(开始)，need(需)，learn(学会)，agree(同意)，decide(决定)，hope(希望)，start(开始)，refuse(拒绝)等。
I’m learning to skate on real ice. 我正在真正的冰上学滑冰。
[特别提醒]
(1)不定式短语作宾语时，如果还带有宾语补足语，通常用it作形式宾语，而被不定式短语放在宾语补足语之后。
He found it very difficult to get to sleep. 他发现难以入睡。
(2)begin(开始)，start(开始)，like(喜欢)，hate(憎恨)，love(喜爱)可以接动词不定式或-ing形式作宾语，意思一般没有区别。但like后接-ing形式指经常性的动作; 接不定式，指一时间、一次性的动作。
I like having a twin sister. 我喜欢有个孪生姐妹。
I like to have a twin sister. 我现在想有个孪生姐妹。
(3)stop(停止)，forget(忘记)，remember(记得)，try(试)，go on(继续)等动词接不定式和-ing形式意义有区别。试比较：
stop to do sth.停下来去做另一件事
stop doing sth.停止(正在)做某事
forget to do sth.忘记去做某事(还未做)
forget doing sth.忘记做过某事(已经做)
remember to do sth.记住去做某事(还未做)
remember doing sth.记住曾做过某事
try to do sth.试图要做某事
try doing sth.试着做某事
go on to do sth.接着做另一件事(已做完一件)
go on doing sth.继续做(原来未做完的)某件事
She stopped crying and listened to the music. = She stopped to listen to the music. 她停止哭闹，听音乐了。
Don’t forget to tell him about it. = Remember to tell him about it. 别忘了(记住)告诉他这件事。
I’ll try not to be late again. 我将争取不再迟到。
She didn’t pull the door and tried pushing it. 她没有拉开门，便试着推一下。
2.动词不定式常用作目的状语。
He came to give us a talk yesterday. 他昨天来给我们作了个报告。
Mrs Brown went to see her doctor. 布朗夫人去看她的医生。
in order to 作“为了”解，用作目的状语。
In order to pass the exam, he worked very hard. 为了通过这次考试，他学习非常刻苦。
不定式短语可以在一些作表语的形容词后作状语，表示原因或结果。
I’m sorry to trouble you. 很抱歉打扰你了。(原因)
Some of the apples are hard to reach. 有些苹果难以够着。(结果)
3.动词tell (叫，让)，ask (请求)， want(希望)，order(命令)，get(使)，wish(希望)，warn(警告)，teach(教)，invite(邀请)等动词后常跟不定式作宾语的补足语，构成tell/ask. sb. to do sth. “叫/请……某人做某事”句型。
Could you ask him to call me, please? 请你让他给我打个电话，好吗？
[特别提醒] 使役动词let(让)，make(使)，have(使)等; 感官动词see(看见)，hear(听见)，feel(感到)，watch(观看)，notice(注意到)，look at(看)，listen to(听)等跟不带to的不定式作宾语补足语。
What makes you think I’m a farmer? 你凭什么说我是农民？
A woman saw it happen when she was walking past. 一位妇女路过时看到(它掉下)的。
We often heard her sing in the next room. 我们时常听到她在隔壁唱歌。
help后面的不定式作宾语补足语，可以带to也可以不带to。
She helped her parents clean the house. 她帮助父母打扫房屋。
We can also use satellites to help us make telephone calls to foreign countries.
我们也能用卫星帮助我们和外国通电话
[特别提醒] 在被动语态句子中，不定式前必须加to。
He was made to do it.他被迫做这件事。
She was often heard to sing in the next room. 经常听到她在隔壁唱歌。
4.不定式短语作定语须放在被修饰的词语之后。
I have a lot of work to do. 我有许多事情要做。
The doctor said he could do nothing to help him. 医生说他无能为力。
5.不定式短语作主语时，常用it作形式主语，真正的主语不定式短语放在后面。
It is right to give up smoking. 戒烟是有益的。
6.作表语
To him, the first important thing was to save lives. 对他来说，最重要的事情就是抢救生命。
His wish was to become a scientist. 他的愿望是当一名科学家。
7. 动词不定式用在疑问词how, when, where, what, which等之后，作宾语或宾语补足语。
He taught us how to use a computer. 他教我们如何使用计算机。
I don’t know where to go? 我不知道去哪里？
Could you tell me which to choose? 请告诉我选择哪一个？
why或why not后常跟不带to的不定式表示一种建议。
Why not have a cup of tea? 喝一杯茶，好吗？
8. 常用不定式的句型
(1)It’s time to do sth. = It’s time for sth. “是做……的时候了”
It’s time to have supper. = It’s time for supper. 该吃晚饭了。
(2)There’s no (time ) to do sth. “没有(时间)做某事”
There was no time to open it. 没有时间去打开它。
(3)It takes sb. some time ( money ) to do sth. “某人花费多少时间(金钱)做某事”
It took me half an hour to do the problem. 我花了半小时做这个题目。
(4)be +形容词+enough + to do sth. “足够……做某事”
The girl is old enough to go to school. 那小姑娘已够上学年龄。
(5)be + too +形容词 + to do sth. “太……不能做某事”
The boy was too frightened to move. 那孩子太害怕，不敢动一动。
(6)be ready + to do sth. “乐意做某事”
Lei Feng is always ready to help others. 雷锋总是乐于助人。
(7)It’s + 形容词+for sb. + to do sth.
It’s important for the twins to help each other. 孪生子互相帮助是很重要的。
(8)be afraid to do sth. “不敢做某事”
He is afraid to tell his father about it. 他不敢告诉他父亲。
(9)prefer to do sth. rather than do sth. 表示“宁愿……也不愿……”
I prefer to stay at home rather than go out. 我宁愿呆在家里也不愿出去。
(10)would like to do sth. 与would love to do sth.常用于口语中，表示 “喜欢……”
I’d like to have a cup of tea. 我想喝杯茶。
I would love to go. 我想去。
(11) had better +不带to的不定式表示“最好……”
You’d better put on your coat. It’s very cold outside. 你最好穿上大衣。外面很冷。
You’d better not go.你最好不要去。
(12)Will you please+不带to的不定式，表示请求。
Will you please ask her to come to the teacher’s office? 请你叫她到老师办公室去一下好吗？
[特别提醒] enjoy(喜欢)，finish(完成)，keep (on ) (坚持/一直……)，be busy(忙于……)，can’t help(情不自禁)等常跟-ing形式作宾语。
He enjoyed living there. 他喜欢住在那里。
Can you finish drawing a good horse in five minutes? 你能在五分钟之内画出一匹好看的马吗？
I kept on thinking about the match in the afternoon. 我一直在考虑下午的比赛。
Keep passing the ball to each other, and you’ll be OK! 坚持互相传球，你们就会赢！
By the time the bell rang, every member of the class was busy reading. 铃响以前，班上每个同学都忙着念书。
⑵ 7B英语第一单元语法点
unit 1
Where is your pen pal from？——He's from Australia.
Where is John's pen pal from?——He's from Japan.
Where does he live?——He lives in Paris.
What language does she speak?——She speaks English.
新目标七年级(下)英语语法练习
[size=1]一般现在时态练习
1．This is my pencil ? (变一般疑问 句) your pencil ?
2. These red socks are Kate’s . (变一般疑问句) socks Kate’s ?
3. I want to buy a big green bag . (变特殊疑问句) you want to buy ?
h5A 4. Mary does not have any books . (变肯定句)Mary books .
5. The clothing shop is on sale . (变为否定句)
6. She likes the black bag very much . (变为否定句)
7. I buy the pants for only 50 Yuan. (用she改写句子)
the pants for only 50 Yuan.
8. It’s an English dictionary . (对画线部分提问)
9. Lily and Lucy are fifteen years old now . (对画线部分提问) Lily and Lucy ?
10. Her dog is 2 years and 5 months old . (变为否定句) Her dog 2 years and 5 months old .
二．用be动词的适当形式填空。
1. I a student . You a teacher . 2. She my friend.
3. you Li Fen ? No, not . 4. Mr. green very busy?Yes , he .
5. He must at home . 6. Comedy very interesting .
7. thrillers very scary ? 8. You and I good friends .
9. His friends very funny 10. The twins very happy because they want to go to a movie .11. The girl in red clothes my sister .
三．用所给动词的适当形式填空。
1. People usually (eat) dinner in the evening .
2. His sister usually (go) to school at 7:00 am .
3. Lin Tao (like) his new sweater .
4. Let me (have) a look .
5. he (like) English ?
6. I want (go) to a movie .
7. He (not know)the teacher’s name
8. Can I (ask) the policeman ?.
9. She likes (play) chess .
10. It’s time (play) games .
现在进行时态
一.用所给动词的适当形式填空.
1.Look! The cat____________(run)up the tree
2.The twins__________(have)breakfast.
3.----___he ________(clean) the blackboard? ----No,he isn’t. `
4.Tom__________(play)the piano in the room.Please ask him to come here
5.Listen! They____________(sing)in the classroom.
二.选择填空.
1.My mother is _____TV.
A.looking at B.seeing C.reading D.watching
2.---____you ____a book? ---Yes,I am.
A.Do,read B.Are ,read C.Are ,reading D.Are ,looking
3.Kate _____,the others _____.
A.sing,listen B.is singing,is listening C.sing,are listeningD.is singing,are listening
4.I ___my eraser,but I can’t ______ it.
C A.look for ,finding B.am finding,look for C.am looking for,find D.find,look for )
三.句型转换
1.I am watering the flowers.(否定句)
2.She’s jumping now.(一般疑问句)
3.The boys are playing cards.(划线提问)
4.He is doing his homework.(复数句)
四、翻译句子
1.我们正在看电视. 2.他们正在打扫教室.
3.汤姆正在吃早饭. 4.那对双胞胎正在睡觉
5.男孩子们正在踢足球. 6.她正在铺床.
7.我正在玩电脑游戏. 8.你们正在听音乐吗?
过去时态
一、改写句子：
1、Lucy did her homework at home.（改否定句）
Lucy _______ _______ her homework at home.
2、He found some meat in the fridge.（变一般疑问句)
______ he _____ ______ meat in the fridge?
3、She stayed there for a week.（对划线部分提问）
______ ______ _____ she _____ there?
4、There was some orange in the cup.（变一般疑问句)
_____ there _____ orange in the cup?
语法复习练习
单项选择单项选择
1. ---How many ________ in the tree? ---There are two.
A. bird are ther B. birds is ther C. birds are there D.birds are their.
2. Mr Smith can speak ________ Chinese, but not ________.
A. some; muchB. a little; manC. some; any D. little; much
3. ---Thanks a lot. ---_________.
A. You are right B. That’s right C. That’s all right D. All right
4. ---________ skirt is this? ---It’s ___________.
A.Who’s;Lucy B.Whose;Lucy'sC.What;LucyD. Which; Lucy’s
5. There are many apples on the table. Please give me some big _________.
A. appl B. one C. ones D. the apples
6. Mr Johnson usually goes to the hospital ________.
A. by his car B. by the black carC. by car D. by the new car
7. Does your brother play ping-pong __________?
A. on every afternoon B. every afternoon
C. in every afternoon D. at every afternoon
8. ________ do you usually come to school?
A. How B. What C. Which D. How much
9. Are we all in _________?
A.the same clasB.sameclassC. the same classesD. same classes
10. ---Don’t you usually come to school by bike?
---_________. But I sometimes walk.
A. Yes, I do B. No, I don’t C. Yes, I do D. No, I don’
11. Susan likes _______.
A. singing B. sing C. sings D. sang
12. Some of ______ can speak English.
A. them B. theirs C. they D. their
13. What ____ Tom and his mother like ?
A. does B. do C. is D. are
14. Where _____ your English teacher from?
A. does B. is C. do D. are
15. Tom can ______ some vegetables at the market.
A. buys B. buying C. buy D. to buy
16. Kate _____ Chinese ______ Monday.
A. have, on B. has, in C. has, on D. there is,
17. A bakery _____ cakes and bread.
A. sell B. buying C. buy D. sells
18. What’s your hobby? My hobby is ______ model plane.
A. makeing B. make C. making D. made
19. Please fill _____ the form.
A. in B. on C. to. D. with
20. The first class _______ at 8:00 am .
A. begin B. is begin C. begins D. is beginning
21. ---_______ is the school library?
---It’s next to the playground.
A. What B. Where C. How D. When
22. Is there a bank _______ your neighborhood?
A. in B. on C. with D. to
23. It’s interesting to take a walk through the _________.
A. hospital B. library C. park D. river
24. ---It’s a place to get money. What is it?
---It’s a _______.
A. hotel B. bank C. home D. park
25. ---Is there a library near where you live? --____________.
A. Yes, there is. B. No, there is. C. Yes, it is. D. No, it isn’t
26. ---What is the opposite of clean?
---________.
A. Small B. Dirty C. Large D. Busy
27. Which kind of animals have long legs and neck?
A. Pandas B. Penguins C. Giraffes. D. do
28. Do you ever play _________ pandas?
A. with B. to C. and D. or
29. He’d like ________ on a vacation.-S1oW#y5KM&sH5l }*tK
A. go B. to go C. going D. wentv9Q9g5Cy7I-ayV
30. Is there _______ in today’s newspaper?0p {yhb/D"}!~
A. important something B. everything important
Dw m'[F/F8H C. anything important D. important anything,U9{1^5Q Y4o
31. Her mother is ________ English teacher. She works in our school.
4N C+]m-bx%P e A. a B. the C. an D. /
!]ex5}/U7BR4n)A 32. They are going to help some farmers ___________ their work.B _\ Qe bL9a2k
A. for B. at C. with D. toL8N,A!S T a R O L
33. _______ your uncle __________ his work?r` XB"U^4m
A. Is, like B. Does, like C. Does, likes D. Do, likes P"ZQP5x
34. Young people like this season _____ it is good for sports. |5n\6x(bK&sJ.d
A. because B. so C. but D. and9Z;}F!m'A n;?c
35. I don’t have __________ read, but I’d like __________.
:V%r_X;J/K A. any, a few B. any, fewC. some, a little D. any, a littleh{~2k/`JI$qm"`
36. ---Can’t you hear __________? ---No, I can hear ___________.
:@+]e7bfi A. anything, nothing B. anything, anything
WZ!Q/n'q&DN C. something, nothing D. something, something
]1U5Jv8dR.Q 37. ---Did you go to the park on Sunday morning?
}\6~^%WJ.K ---________, I went there in the afternoon.vDX2eN9j2D's
A. Yes B. No C. Sure D. Sorry
L#snhp%Kq 38. ---You look tired.-_S5BX4W8M"~w
---Oh, I studied _________ the math test.
)o K1D*t3Ej)}v A. on B. at C. for D. in
b'il8X? 39. I had a ________ weekend. I did a lot of things. How tired I am!"_0Fe|7r'z
A. free B. busy C. good D. bad1w5V3t.y"h mf-D
40. She often buys some CDs ___________ Sunday.2uWo*L9h j)LWy$k
A. at B. in C. on D. withi^3]aa W0Z
41. An old friend of my sister’s always helps my brother and _____
X8{"r|3OJ-I with _____ English.rs*q yT \#E2O6H
A. I, our B. me, our C. me, ourselves D. me, my
2J(|Ks(S y;?Ay 42. Wang Lin _______ very popular. He is the captain of the basketball team.
}7|$Q r?{Q7e A. is B. are C. has D. have
vv9f/V4}n6R/^i.]\ 43. She’s a little bit ________. She doesn’t like talking with others.t8^1y5n+yiy}b0T
A. heavy B. thin C. quiet D. nice
W ck$Sj ^ { 44. I have new image and nobody ________ me. B4iE7_E3S0c
A. see B. sees C. know D. knows}#tc(V WkG!G
45. Do you know the boy ______ the funny glasses.
D&e1y n pp A. on B. at C. with D. to
wXZB @#Q1L2HN,d&ft 46. Rita _______ long hair last week. But she has short hair now.!OgH0Y}
A. have B. has C. had D. having
d4j&d ^+M0G 47. I don’t think he’s so great, but my mom _________.
]!D0VYX,N3H A. do B. does C. is D. are
/\?4a J JJ{*es 48. Let’s _______. I want to buy a new T-shirt.4v*tY$m(?_ p
A. go swimming B. go to the moviesC. go shopping D. go to the beach
y m)f TcS!v#w 49. My hat is black. It ________ a cat.
4l S;uH"|/^7GA"c A;t A. look like B. looks like C. like D. likes
.|'| R C3\!\X5J0vn 50. I like _______ chess. How about you?
o8D0eba ~ A. play B. playing C. plays D. playediK8b[ T m!B
51. I have a new pair of shoes. ________ black and white.xz(yrS)P"P
A. It is B. They are C. These are D. This is
(YKi v7`^_/o 52. I like _________ very much. They are from Australia.d S Y R/T:cv c4n
A. pandas B. giraffes C. koala bears D. dolphins
/J/E"q?raG 53. What would you like _______ your pizza? SM bGzBT
A. on B. in C. from D. to6`(Cs5d3l:l(J Y
54. What is Mary like? She ________.
B n0l8l%} A. is medium height B. has curly hair
lJu(g t\ C. has a medium build D. is funny?7b5G;bgO }+Z-M
55. I don’t like _________ weather because it’s too cold.tPcp$j)Q/R/s5J
A. sunny B. snowy C. warm D. hot!K3N2`8L"l? f0W ] op
56. What will you do ________ vacation?-^+e J E2aX
A. on B. in C. to D. of
M EvrX9}(w 57. He _______ English very well.Y'G @Z3~9g(\H:\
A. tells B. talks C. speaks D. saysa4}(Jpd mfk
58. Tony is always late ________ school because he gets up ________ 7:00.
+}&k8Xgo e"kI^;X"\ A. at, for B. at, at C. for, at D. for, forVN p;qd u Vm
59. I like fried chicken so I always think it is _________.
{n9F"| VS A. delicious B. expensive C. terrible D. cheap3qAWk#[^n2G
60. I broke my leg yesterday ______ I didn’t run for exercise in the morning.Ms\ D3]6g3A
A. or B. but C. because D. so1A |K@+[d n
61. He is friendly and most of his classmates like to discuss ______ him.(W~J+Ns
A. by B. on C. with D. and
3Wa0QR Y6H 62. ---Yesterday, I watched a movie Harry Potter. I don’t love it. How about you?n@fF0}
--- I do too B. I don’t too C. I don’t either D. I do either
#Ic~S IB4B q 63. Tom studies at our school. He is a ________ boy.'V"~S+?t`
A. fifteen-year-old B. fifteen-years-old 9}9lE Z]N
C.fifteenyear old D. fifteen years old
"_zcs8Y6q ^ 64. ---Do you like to watch Hero?
&X f0m O.w2}!_ep;? lw ---Yes. I enjoy ________ action movies.
%W%K+_8bK @+C py` A. watch B. watches C. to watch D. watching)UMS` C@D
65. They don’t have to _____ their school uniforms.
~2`:Gd2k3A&Y A. dress B. have on C. wear D. put on
j3t'@Tw'o:t 66. Don’t watch TV _________ school nights.g c9a\l9f'u8pF
A. at B. in C. / D. on
#B/P;iFM 67. We can’t ________ late for class.
#S k a$e[g A. arrive in B. arrive at C. get to D. arrive
Nu%l4Jvy 68. You can’t eat _____ outside.#l&D#y J]6^/VB \
A. at B. / C. in D. on"^c Gk{N l+y
69. There are too _________ rules in the school.1vcs%X |7iM?
A. many B. much C. a lot of D. some h*s0j'ei
70. Be home ________ 8 o’clock on Saturday.
n d]~q J A. by B. to C. on D. in f5K{%T0V D
71. Students can’t _________ music in the hallways.!n REOr ]7T2w]
A. listen B. hear C. listen to D. hear to
dlL:s \0t/o/T | 72. ________ at ten o’clock in the evening.
Mm2R0r@j/Kb A. Go to bed B. Goes to bed C. Gets up D. Get up
;H g BKmj.~7F 73. A kid ______ breakfast every morning, because it’s good for his health.
QkR&T"D j6pG pv A. have to B. has to C. has to have D. has to has _Zi1\@R5U
74. Don’t go into the classroom without the _________.
6TL1yM:G},Z| Nny A. doctor B. assistant C. teacher D. clerk
iM~p ]a 75. She _______ this book last week.
V,?Q5T a y A. read B. reads C. readed D. is reading+t0{@C v6M
76. When _______ your birthday? l~B'U9P
A. is B. was C. were D. are
X;T6CV_/f"S:O6O$k 77. There are a lot of students in the classroom. Some are reading. ________ are writing.
r}R^Wj7u A. Other B. The other C. another D. Others
'@f6qnp\0e l 78. I have to leave here now. Can you take a photo _______ me?fPN'J[,CEJV
A. with B. of C. by D. on
!F A(o"e xv4bk3^ 79. 13. It’s very cold in this room. Why don’t you _________ your coat?
%g]0R#kvgg }1xA A. take off B. wear C. put on D. take to
$B @3Z nK+B }9e5?Z 80. --- Hello, ___________? ---This is Peter.
]8Et#P ^)F A. What’s this?B. Who’s this? C. Who are you? D. What are you?
(没有这些符号的,我把这个网站给你)
http://www.songcao.com/bbs/archiver/?tid-225.html
⑶ 初中英语语法连词部分训练！追加！！
哈哈！我找到啦！加分哦！
http://czyy.lnes.cn/yufa/ShowArticle.asp?ArticleID=85
⑷ 必修一英语一单元语法讲解
直接引语和间接引语
引述某人的话一般采用两种形式：一种是直接引语（Direct Speech），即原封不动地引用原话，把它放在引号内；另一种是间接引语（Indirect Speech），即用自己的话加以转述，被转述的内容不放在引号内。
一、 直接引语变间接引语
A． 陈述句的间接引语
直接引语是陈述句，变为间接引语时，在多数情况下都构成一个that引导的宾语从句，引述动词通常是say, tell等。与此同时，间接引语中的人称、时态和其他方面也要相应有所变化。
The foreigner aid to me, I like Beijing very much.那老外告诉我：我很喜欢北京。
→ The foreigner told me that he she liked Beijing very much. 那老外告诉我说他（她）很喜欢北京。
She said,We are very fond of sports. 她说：我们都喜欢体育运动。
→ She said that they were very fond of sports. 她说他（她）们都喜欢体运动。
I'll go over the grammar lesson once again,he said. 他说：我将把语法课再复习一遍。
→ He said he would go over the grammar lesson once again. 他说他将要把语法课再复习一遍。（that可省略）
B． 疑问句的间接引语
1．一般疑问句和反意疑问句
一般疑问句改为间接引语时，要用陈述语序，并要加连词if 或 whether，其主句动词常用ask, wonder, wantto know, didn't know等。句末不用问号。
My teacher asked me, Do you like American country music 我老师问我：你喜欢美国乡村音乐吗？
→ My teacher asked me ifwhether I liked American country music. 我老师问我是否喜欢美国乡村音乐。
You haven't been to Beijing, have you asked he. 他问：你没去过北，是吗？
→ He asked me ifwhether I had been to Beijing. 他问我是否去过北京。
2．否定的一般疑问句和选择问句
如果直接引语为否定的一般问句或选择疑问句时，用whether
⑸ 初中英语连词搭配语法问题（要求详细原因解答）
1.THAT 连接的是句子，保持句子的完整性，要加IT。这种情况不加：IT IS DIFFICULT TO DO . 可以与TOO...TO互换专，但句子结构要变。属this exercise is too difficult to do,不能用复合句。
2.此处while表示前面的事情发生在后面事情的过程中，不能换成before
3.不改变时态的话就不能换，since引导的时间从句，主句要用完成时态，
⑹ 初中英语连词的主要要求及其用法
连词是连结单词、短语、从句或句子的虚词， 在句子中不单独作句子成份。
回连词按其性质可答分为：
1．并列连词 如：and, or, but, for, 等， 连接并列的词与词，短语与短语，句子与句子。
2．从属连词 如：that, whether, when, because, though 等， 用以引导名词性从句和状语从句。
3.though (although)引导让步状语从句，because 引导原因状语从句，所以though(although)不能和并列连词but ，because 不能和并列连词so一起使用。只能单独使用。
中考中第三条是考察的重点，还有一些，：
or, either...or, otherwise，
but, however, while, only
and, both...and, neither...nor, not only...but also, as well as, together with
都需要掌握
⑺ 初三英语第一单元语法
介词来后面可以加名词作为宾语，源还可以加上动名词，也就是动词的ing形式。这个叫做介宾结构
例如：
介词+名词
by bike
介词+动名词
by doing (表示“通过做某事”来完成目的，是一种方式)
study 和后面的by不是一个结构的
但是study可以有其他结构，如study sth.或study doing或study to do都可以