⑴ 初中英語全講解
動詞不定式具有名詞、形容詞和副詞的特徵,因此,在句中可以作主語、表語、賓語、賓語補足語、定語和狀語。
1.常跟不定式作賓語的動詞有want(想、要),love(喜歡),begin(開始),need(需),learn(學會),agree(同意),decide(決定),hope(希望),start(開始),refuse(拒絕)等。
I』m learning to skate on real ice. 我正在真正的冰上學滑冰。
[特別提醒]
(1)不定式短語作賓語時,如果還帶有賓語補足語,通常用it作形式賓語,而被不定式短語放在賓語補足語之後。
He found it very difficult to get to sleep. 他發現難以入睡。
(2)begin(開始),start(開始),like(喜歡),hate(憎恨),love(喜愛)可以接動詞不定式或-ing形式作賓語,意思一般沒有區別。但like後接-ing形式指經常性的動作; 接不定式,指一時間、一次性的動作。
I like having a twin sister. 我喜歡有個孿生姐妹。
I like to have a twin sister. 我現在想有個孿生姐妹。
(3)stop(停止),forget(忘記),remember(記得),try(試),go on(繼續)等動詞接不定式和-ing形式意義有區別。試比較:
stop to do sth.停下來去做另一件事
stop doing sth.停止(正在)做某事
forget to do sth.忘記去做某事(還未做)
forget doing sth.忘記做過某事(已經做)
remember to do sth.記住去做某事(還未做)
remember doing sth.記住曾做過某事
try to do sth.試圖要做某事
try doing sth.試著做某事
go on to do sth.接著做另一件事(已做完一件)
go on doing sth.繼續做(原來未做完的)某件事
She stopped crying and listened to the music. = She stopped to listen to the music. 她停止哭鬧,聽音樂了。
Don』t forget to tell him about it. = Remember to tell him about it. 別忘了(記住)告訴他這件事。
I』ll try not to be late again. 我將爭取不再遲到。
She didn』t pull the door and tried pushing it. 她沒有拉開門,便試著推一下。
2.動詞不定式常用作目的狀語。
He came to give us a talk yesterday. 他昨天來給我們作了個報告。
Mrs Brown went to see her doctor. 布朗夫人去看她的醫生。
in order to 作「為了」解,用作目的狀語。
In order to pass the exam, he worked very hard. 為了通過這次考試,他學習非常刻苦。
不定式短語可以在一些作表語的形容詞後作狀語,表示原因或結果。
I』m sorry to trouble you. 很抱歉打擾你了。(原因)
Some of the apples are hard to reach. 有些蘋果難以夠著。(結果)
3.動詞tell (叫,讓),ask (請求), want(希望),order(命令),get(使),wish(希望),warn(警告),teach(教),invite(邀請)等動詞後常跟不定式作賓語的補足語,構成tell/ask. sb. to do sth. 「叫/請……某人做某事」句型。
Could you ask him to call me, please? 請你讓他給我打個電話,好嗎?
[特別提醒] 使役動詞let(讓),make(使),have(使)等; 感官動詞see(看見),hear(聽見),feel(感到),watch(觀看),notice(注意到),look at(看),listen to(聽)等跟不帶to的不定式作賓語補足語。
What makes you think I』m a farmer? 你憑什麼說我是農民?
A woman saw it happen when she was walking past. 一位婦女路過時看到(它掉下)的。
We often heard her sing in the next room. 我們時常聽到她在隔壁唱歌。
help後面的不定式作賓語補足語,可以帶to也可以不帶to。
She helped her parents clean the house. 她幫助父母打掃房屋。
We can also use satellites to help us make telephone calls to foreign countries.
我們也能用衛星幫助我們和外國通電話
[特別提醒] 在被動語態句子中,不定式前必須加to。
He was made to do it.他被迫做這件事。
She was often heard to sing in the next room. 經常聽到她在隔壁唱歌。
4.不定式短語作定語須放在被修飾的詞語之後。
I have a lot of work to do. 我有許多事情要做。
The doctor said he could do nothing to help him. 醫生說他無能為力。
5.不定式短語作主語時,常用it作形式主語,真正的主語不定式短語放在後面。
It is right to give up smoking. 戒煙是有益的。
6.作表語
To him, the first important thing was to save lives. 對他來說,最重要的事情就是搶救生命。
His wish was to become a scientist. 他的願望是當一名科學家。
7. 動詞不定式用在疑問詞how, when, where, what, which等之後,作賓語或賓語補足語。
He taught us how to use a computer. 他教我們如何使用計算機。
I don』t know where to go? 我不知道去哪裡?
Could you tell me which to choose? 請告訴我選擇哪一個?
why或why not後常跟不帶to的不定式表示一種建議。
Why not have a cup of tea? 喝一杯茶,好嗎?
8. 常用不定式的句型
(1)It』s time to do sth. = It』s time for sth. 「是做……的時候了」
It』s time to have supper. = It』s time for supper. 該吃晚飯了。
(2)There』s no (time ) to do sth. 「沒有(時間)做某事」
There was no time to open it. 沒有時間去打開它。
(3)It takes sb. some time ( money ) to do sth. 「某人花費多少時間(金錢)做某事」
It took me half an hour to do the problem. 我花了半小時做這個題目。
(4)be +形容詞+enough + to do sth. 「足夠……做某事」
The girl is old enough to go to school. 那小姑娘已夠上學年齡。
(5)be + too +形容詞 + to do sth. 「太……不能做某事」
The boy was too frightened to move. 那孩子太害怕,不敢動一動。
(6)be ready + to do sth. 「樂意做某事」
Lei Feng is always ready to help others. 雷鋒總是樂於助人。
(7)It』s + 形容詞+for sb. + to do sth.
It』s important for the twins to help each other. 孿生子互相幫助是很重要的。
(8)be afraid to do sth. 「不敢做某事」
He is afraid to tell his father about it. 他不敢告訴他父親。
(9)prefer to do sth. rather than do sth. 表示「寧願……也不願……」
I prefer to stay at home rather than go out. 我寧願呆在家裡也不願出去。
(10)would like to do sth. 與would love to do sth.常用於口語中,表示 「喜歡……」
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 +不帶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+不帶to的不定式,表示請求。
Will you please ask her to come to the teacher』s office? 請你叫她到老師辦公室去一下好嗎?
[特別提醒] enjoy(喜歡),finish(完成),keep (on ) (堅持/一直……),be busy(忙於……),can』t help(情不自禁)等常跟-ing形式作賓語。
He enjoyed living there. 他喜歡住在那裡。
Can you finish drawing a good horse in five minutes? 你能在五分鍾之內畫出一匹好看的馬嗎?
I kept on thinking about the match in the afternoon. 我一直在考慮下午的比賽。
Keep passing the ball to each other, and you』ll be OK! 堅持互相傳球,你們就會贏!
By the time the bell rang, every member of the class was busy reading. 鈴響以前,班上每個同學都忙著念書。
⑵ 7B英語第一單元語法點
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.
新目標七年級(下)英語語法練習
[size=1]一般現在時態練習
1.This is my pencil ? (變一般疑問 句) your pencil ?
2. These red socks are Kate』s . (變一般疑問句) socks Kate』s ?
3. I want to buy a big green bag . (變特殊疑問句) you want to buy ?
h5A 4. Mary does not have any books . (變肯定句)Mary books .
5. The clothing shop is on sale . (變為否定句)
6. She likes the black bag very much . (變為否定句)
7. I buy the pants for only 50 Yuan. (用she改寫句子)
the pants for only 50 Yuan.
8. It』s an English dictionary . (對畫線部分提問)
9. Lily and Lucy are fifteen years old now . (對畫線部分提問) Lily and Lucy ?
10. Her dog is 2 years and 5 months old . (變為否定句) Her dog 2 years and 5 months old .
二.用be動詞的適當形式填空。
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.用所給動詞的適當形式填空。
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 .
現在進行時態
一.用所給動詞的適當形式填空.
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.選擇填空.
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.句型轉換
1.I am watering the flowers.(否定句)
2.She』s jumping now.(一般疑問句)
3.The boys are playing cards.(劃線提問)
4.He is doing his homework.(復數句)
四、翻譯句子
1.我們正在看電視. 2.他們正在打掃教室.
3.湯姆正在吃早飯. 4.那對雙胞胎正在睡覺
5.男孩子們正在踢足球. 6.她正在鋪床.
7.我正在玩電腦游戲. 8.你們正在聽音樂嗎?
過去時態
一、改寫句子:
1、Lucy did her homework at home.(改否定句)
Lucy _______ _______ her homework at home.
2、He found some meat in the fridge.(變一般疑問句)
______ he _____ ______ meat in the fridge?
3、She stayed there for a week.(對劃線部分提問)
______ ______ _____ she _____ there?
4、There was some orange in the cup.(變一般疑問句)
_____ there _____ orange in the cup?
語法復習練習
單項選擇單項選擇
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 _\QebL9a2k
A. for B. at C. with D. toL8N,A!S T a RO 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$qm"`
36. ---Can』t you hear __________? ---No, I can hear ___________.
:@+]e7bfi A. anything, nothing B. anything, anything
WZ!Q/n'q&DN C. something, nothing D. something, something
]1U5Jv8dR.Q 37. ---Did you go to the park on Sunday morning?
}\6~^%WJ.K ---________, I went there in the afternoon.vDX2eN9j2D's
A. Yes B. No C. Sure D. Sorry
L#snhp%Kq 38. ---You look tired.-_S5BX4W8M"~w
---Oh, I studied _________ the math test.
)o K1D*t3Ej)}v A. on B. at C. for D. in
b'il8X? 39. I had a ________ weekend. I did a lot of things. How tired I am!"_0Fe|7r'z
A. free B. busy C. good D. bad1w5V3t.y"hmf-D
40. She often buys some CDs ___________ Sunday.2uWo*L9hj)LWy$k
A. at B. in C. on D. withi^3]aaW0Z
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|$Qr?{Q7e A. is B. are C. has D. have
vv9f/V4}n6R/^i.]\ 43. She』s a little bit ________. She doesn』t like talking with others.t8^1y5n+yiy}b0T
A. heavy B. thin C. quiet D. nice
W ck$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&e1yn 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
/\?4aJ JJ{*es 48. Let』s _______. I want to buy a new T-shirt.4v*tY$m(?_p
A. go swimming B. go to the moviesC. go shopping D. go to the beach
y m)f TcS!v#w 49. My hat is black. It ________ a cat.
4l S;uH"|/^7GA"c A;t A. look like B. looks like C. like D. likes
.|'| RC3\!\X5J0vn 50. I like _______ chess. How about you?
o8D0eba ~ A. play B. playing C. plays D. playediK8b[ T m!B
51. I have a new pair of shoes. ________ black and white.xz(yrS)P"P
A. It is B. They are C. These are D. This is
(YKi v7`^_/o 52. I like _________ very much. They are from Australia.d SYR/T:cv c4n
A. pandas B. giraffes C. koala bears D. dolphins
/J/E"q?raG 53. What would you like _______ your pizza?SMbGzBT
A. on B. in C. from D. to6`(Cs5d3l:l(J Y
54. What is Mary like? She ________.
B n0l8l%} A. is medium height B. has curly hair
lJu(gt\ C. has a medium build D. is funny?7b5G;bgO }+Z-M
55. I don』t like _________ weather because it』s too cold.tPcp$j)Q/R/s5J
A. sunny B. snowy C. warm D. hot!K3N2`8L"l? f0W ]op
56. What will you do ________ vacation?-^+e JE2aX
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 uVm
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 IB4Bq 63. Tom studies at our school. He is a ________ boy.'V"~S+?t`
A. fifteen-year-old B. fifteen-years-old 9}9lEZ]N
C.fifteenyear old D. fifteen years old
"_zcs8Y6q ^ 64. ---Do you like to watch Hero?
&Xf0m 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$e[g A. arrive in B. arrive at C. get to D. arrive
Nu%l4Jvy 68. You can』t eat _____ outside.#l&D#y J]6^/VB\
A. at B. / C. in D. on"^c Gk{Nl+y
69. There are too _________ rules in the school.1vcs%X|7iM?
A. many B. much C. a lot of D. someh*s0j'ei
70. Be home ________ 8 o』clock on Saturday.
nd]~q J A. by B. to C. on D. in f5K{%T0VD
71. Students can』t _________ music in the hallways.!nREOr ]7T2w]
A. listen B. hear C. listen to D. hear to
dlL:s\0t/o/T| 72. ________ at ten o』clock in the evening.
Mm2R0r@j/Kb A. Go to bed B. Goes to bed C. Gets up D. Get up
;H gBKmj.~7F 73. A kid ______ breakfast every morning, because it』s good for his health.
QkR&T"D j6pGpv A. have to B. has to C. has to have D. has to has _Zi1\@R5U
74. Don』t go into the classroom without the _________.
6TL1yM:G},Z| Nny A. doctor B. assistant C. teacher D. clerk
iM~p ]a 75. She _______ this book last week.
V,?Q5T a y A. read B. reads C. readed D. is reading+t0{@C v6M
76. When _______ your birthday? l~B'U9P
A. is B. was C. were D. are
X;T6CV_/f"S:O6O$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"exv4bk3^ 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?
(沒有這些符號的,我把這個網站給你)
http://www.songcao.com/bbs/archiver/?tid-225.html
⑶ 初中英語語法連詞部分訓練!追加!!
哈哈!我找到啦!加分哦!
http://czyy.lnes.cn/yufa/ShowArticle.asp?ArticleID=85
⑷ 必修一英語一單元語法講解
直接引語和間接引語
引述某人的話一般採用兩種形式:一種是直接引語(Direct Speech),即原封不動地引用原話,把它放在引號內;另一種是間接引語(Indirect Speech),即用自己的話加以轉述,被轉述的內容不放在引號內。
一、 直接引語變間接引語
A. 陳述句的間接引語
直接引語是陳述句,變為間接引語時,在多數情況下都構成一個that引導的賓語從句,引述動詞通常是say, tell等。與此同時,間接引語中的人稱、時態和其他方面也要相應有所變化。
The foreigner aid to me, I like Beijing very much.那老外告訴我:我很喜歡北京。
→ The foreigner told me that he she liked Beijing very much. 那老外告訴我說他(她)很喜歡北京。
She said,We are very fond of sports. 她說:我們都喜歡體育運動。
→ She said that they were very fond of sports. 她說他(她)們都喜歡體運動。
I'll go over the grammar lesson once again,he said. 他說:我將把語法課再復習一遍。
→ He said he would go over the grammar lesson once again. 他說他將要把語法課再復習一遍。(that可省略)
B. 疑問句的間接引語
1.一般疑問句和反意疑問句
一般疑問句改為間接引語時,要用陳述語序,並要加連詞if 或 whether,其主句動詞常用ask, wonder, wantto know, didn't know等。句末不用問號。
My teacher asked me, Do you like American country music 我老師問我:你喜歡美國鄉村音樂嗎?
→ My teacher asked me ifwhether I liked American country music. 我老師問我是否喜歡美國鄉村音樂。
You haven't been to Beijing, have you asked he. 他問:你沒去過北,是嗎?
→ He asked me ifwhether I had been to Beijing. 他問我是否去過北京。
2.否定的一般疑問句和選擇問句
如果直接引語為否定的一般問句或選擇疑問句時,用whether
⑸ 初中英語連詞搭配語法問題(要求詳細原因解答)
1.THAT 連接的是句子,保持句子的完整性,要加IT。這種情況不加:IT IS DIFFICULT TO DO . 可以與TOO...TO互換專,但句子結構要變。屬this exercise is too difficult to do,不能用復合句。
2.此處while表示前面的事情發生在後面事情的過程中,不能換成before
3.不改變時態的話就不能換,since引導的時間從句,主句要用完成時態,
⑹ 初中英語連詞的主要要求及其用法
連詞是連結單詞、短語、從句或句子的虛詞, 在句子中不單獨作句子成份。
回連詞按其性質可答分為:
1.並列連詞 如:and, or, but, for, 等, 連接並列的詞與詞,短語與短語,句子與句子。
2.從屬連詞 如:that, whether, when, because, though 等, 用以引導名詞性從句和狀語從句。
3.though (although)引導讓步狀語從句,because 引導原因狀語從句,所以though(although)不能和並列連詞but ,because 不能和並列連詞so一起使用。只能單獨使用。
中考中第三條是考察的重點,還有一些,:
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 初三英語第一單元語法
介詞來後面可以加名詞作為賓語,源還可以加上動名詞,也就是動詞的ing形式。這個叫做介賓結構
例如:
介詞+名詞
by bike
介詞+動名詞
by doing (表示「通過做某事」來完成目的,是一種方式)
study 和後面的by不是一個結構的
但是study可以有其他結構,如study sth.或study doing或study to do都可以