九年級英語-知識點語法(單元歸納)

1、精選優(yōu)質(zhì)文檔-傾情為你奉上九年級英語知識點匯總Unit11. by + doing 通過方式如：by studying with a group by 還可以表示：“在旁”、“靠近”、“在期間”、“用、”“經(jīng)過”、“乘車”等如：I live by the river. I have to go back by ten oclock. The thief entered the room by the window. The student went to park by bus.2. talk about 談論，議論，討論如：The students often talk about movi

2、e after class. 學生們常常在課后討論電影。talk to sb. = talk with sb. 與某人說話3. 提建議的句子：What/ how about +doing sth.? 如：What/ How about going shopping? Why dont you + do sth.? 如：Why dont you go shopping? Why not + do sth. ? 如：Why not go shopping? Lets + do sth. 如： Lets go shopping Shall we/ I + do sth.? 如：Shall we/ I

3、 go shopping?4. a lot 許多 常用于句末 如：I eat a lot. 我吃了許多。5. tooto 太而不能 常用的句型 too+adj./adv. + to do sth. 如：Im too tired to say anything. 我太累了，什么都不想說。6. aloud, loud與loudly的用法 三個詞都與"大聲"或"響亮"有關。 aloud是副詞,重點在出聲能讓人聽見,但聲音不一定很大,常用在讀書或說話上。通常放在動詞之后。aloud沒有比較級形式。如: He read the story aloud to his

4、 son.他朗讀那篇故事給他兒子聽。loud可作形容詞或副詞。用作副詞時,常與speak, talk, laugh等動詞連用,多用于比較級,須放在動詞之后。如: She told us to speak a little louder. 她讓我們說大聲一點。loudly是副詞,與loud同義,有時兩者可替換使用,但往往含有令人討厭或打擾別人的意思,可位于動詞之前或之后。如: He does not talk loudly or laugh loudly in public. 他不當眾大聲談笑。7. not at all 一點也不 根本不 如： I like milk very much. I

5、dont like coffee at all. 我非常喜歡牛奶。我一點也不喜歡咖啡。 not經(jīng)常可以和助動詞結(jié)合在一起，at all 則放在句尾8. be / get excited about sth.= be / get excited about doing sth. = be excited to do sth. 對感興奮 如： I am / get excited about going to Beijing.= I am excited to go to Beijing. 我對去北京感到興奮。9. end up doing sth 終止做某事，結(jié)束做某事 如： The party

6、 ended up singing. 晚會以唱歌而結(jié)束。 end up with sth. 以結(jié)束 如： The party ended up with her singing. 晚會以她的歌唱而告終。10. first of all 首先. to begin with 一開始 later on 后來、隨11. also 也、而且（用于肯定句）常在句子的中間 either 也（用于否定句）常在句末 too 也 (用于肯定句) 常在句末12. make mistakes 犯錯 如：I often make mistakes. 我經(jīng)常犯錯。make a mistake 犯一個錯誤 如： I hav

7、e made a mistake. 我已經(jīng)犯了一個錯誤。13. laugh at sb. 笑話；取笑（某人） 如：Dont laugh at me! 不要取笑我!14. take notes 做筆記，做記錄 15. enjoy doing sth . 喜歡做樂意做 如： She enjoys playing football. 她喜歡踢足球。 enjoy oneself 過得愉快 如：He enjoyed himself. 他過得愉快。16. native speaker 說本族語的人17. make up 組成、構(gòu)成 18. one of +(the+ 形容詞比較級)+名詞復數(shù)形式 其中之一

8、 如： She is one of the most popular teachers. 她是最受歡迎的教師之一。19. Its +形容詞+(for sb. ) to do sth. (對于某人來說)做某事 如：Its difficult (for me ) to study English. 對于我來說學習英語太難了。 句中的it 是形式主語，真正的主語是to study English20. practice doing 練習做某事 如： She often practice speaking English. 她經(jīng)常練習說英語。21. decide to do sth. 決定做某事 如：

9、 LiLei has decided to go to BeiJing . 李雷已經(jīng)決定去北京。22. unless 假如不，除非 引導條件狀語從句 如：You will fail unless you work hard.假如你不努力你會失敗。 I wont write unless he writes first. 除非他先寫要不我不寫23. deal with 處理 如：I dealt with a lot of problem.24. worry about sb./ sth. 擔心某人/ 某事 如：Mother worried about his son just now. 媽媽剛才

10、擔心他的兒子。25. be angry with sb. 對某人生氣 如： I was angry with her. 我對她生氣。26. perhaps = maybe 也許27. go by (時間) 過去 如： Two years went by. 兩年過去了。28. see sb. / sth. doing 看見某人正在做某事 強調(diào)正在發(fā)生see sb. / sth. do 看見某人在做某事 如： 如： She saw him drawing a picture in the classroom. 她看見他正在教室里畫畫。29. each other 彼此 30. regard as

11、把看作為. 如：The boys regarded Anna as a fool. 這些男孩把安娜看成傻瓜。31. too many許多修飾可數(shù)名詞如：too many girls too much許多修飾不可數(shù)名詞 如：too much milk much too太修飾形容詞 如：much too beautiful32. changeinto將變?yōu)槿纾篢he magician changed the pen into a book. 這個魔術師將這本書變?yōu)橐槐緯?3. with the help of sb. = with ones help 在某人的幫助下 如：with the hel

12、p of LiLei = with LiLeis help 在李雷的幫助下34. compare to 把與相比如：Compare you to Anna, you are lucky. 你和安娜相比，你是幸運的。35. instead 代替用在句末，副詞（字面上常不譯出來） instead of sth. / doing sth. 代替，而不是 用在句中，動詞如：Last summer I went to Beijing. This year Im going to Shanghai instead.去年夏天我去北京, 今年我將要去上海。I will go instead of you. 我

13、將代替你去。He stayed at home instead of going swimming. 他呆在家里而不是去游泳。九年級英語Unit21. used to do sth. 過去常常做某事否定形式：didnt use to do sth. / used not to do sth.如：He used to play football after school. 放學后他過去常常踢足球。 Did he use to play football? Yes, I did. No, I didnt. He didnt use to smoke. 他過去不吸煙。2. 反意疑問句 肯定陳述句否定

14、提問如：Lily is a student, isnt she? Lily will go to China, wont she? 否定陳述句肯定提問 如：She doesnt come from China, does she?You havent finished homework, have you?提問部分用代詞而不用名詞 Lily is a student, isnt she?陳述句中含有否定意義的詞，如：little, few, never, nothing, hardly等。其反意疑問句用肯定式。 如：He knows little English, does he?他一點也不懂

15、英語，不是嗎？They hardly understood it, did they?他們幾乎不明白，不是嗎？3. play the piano彈鋼琴4. be interested in sth. 對感興趣be interested in doing sth. 對做感興趣 如：He is interested in math, but he isnt interested in speaking English. 他對數(shù)學感興趣，但是他對說英語不感興趣。5. interested adj. 感興趣的，指人對某事物感興趣，往往主語是人 interesting adj.有趣的，指某事物/某人具有

16、趣味，主語往往是物6. still 仍然，還用在be動詞的后面如：Im still a student. 用在行為動詞的前面如：I still love him.7. the dark 天黑，晚上，黑暗8. 害怕 be terrified of sth. 如：I am terrified of the dog. be terrified of doing sth. 如：I am terrified of speaking.9. on 副詞，表示（電燈、電視、機械等）在運轉(zhuǎn)中/打開，其反義詞off. with the light on 燈開著10. walk to somewhere 步行到某處

17、 walk to school 步行到學校11.spend 動詞，表示“花費金錢、時間” spendon sth. 在某事上花費（金錢、時間） spenddoing sth. 花費（金錢、時間）去做某事如：He spends too much time on clothes. 他花費太多的時間在衣著He spend 3 months building the bridge.他花費了三個月去建這座橋。 Pay for 花費如：I pay 10 yuan for the book. 我花了10元買這本書。12. take 動詞有“花費”的意思常用的結(jié)構(gòu)有：take sb. to do sth. 如

18、：It takes me a day to read the book.take to do sth. 13. chat with sb. 與某人閑聊如：I like to chat with him. 我喜歡和他聊天。14. worry about sb./ sth. 擔心某人/某事worry 是動詞 be worried about sb./sth. 擔心某人/某事worried 是形容詞如：Dont worry about him. 不用擔心他。Mother is worried about her son. 媽媽擔心他的兒子。15. all the time 一直、始終16. take

19、 sb. to + 地方送/帶某人去某個地方如：A person took him to the hospital. 一個人把他送到了醫(yī)院。 Lui took me home. 劉把我送回了家。(home 的前面不能用to)17. hardly adv. 幾乎不、沒有 hardly ever 很少 hardly 修飾動詞時，通常放在助動詞、情態(tài)動詞之后，實義動詞之前助動詞/情態(tài)動詞hardly hardly + 實義動詞如：I can hardly understand them. 我?guī)缀醪荒軌蛎靼姿麄?。I hardly have time to do it. 我?guī)缀鯖]有時間去做了。18. m

20、iss v. 思念、想念、錯過19. in the last few years. 在過去的幾年內(nèi)常與完成時連用如： I have lived in China in the last few years. 在過去的幾年內(nèi)我在中國住。20. be different from 與不同21. how to swim 怎樣游泳不定式與疑問詞連用：動詞不定式可以和what, which, how, where, when 等引導的疑問句連用，構(gòu)成不定工短語。如： The question is when to start. 問題是什么時候開始。 I dont know where to go. 我不

21、知道去哪。22. make sb./ sth. + 形容詞make you happy make sb./ sth. + 動詞原形 make him laugh23. move to +地方搬到某地如：I moved to Beijing last year.24. it seems that +從句看起來好像如：It seems that he has changed a lot. 看起來他好像變了許多。25. help sb. with sth. 幫某人某事 help sb. (to ) do sth. 幫某人做某事She helped me with English.她幫助我學英語。Sh

22、e helped me (to) study English。她幫助我學習英語。26. fifteen-year-old 作形容詞15歲的 fifteen-year-olds 作名詞指15歲的人 fifteen years old 指年齡15歲如：a fifteen-year-old boy一個15歲的男孩Fifteen-year-olds like to sing. 15歲的人喜歡唱歌。I am fifteen years old . 我是15歲。27.支付不起 cant /couldnt afford to do sth. cant / couldnt afford sth. 如：I ca

23、nt/couldnt afford to buy the car. I cant/couldnt afford the car. 我買不起這個輛小車。28. as + 形容詞./副詞as sb. could/can 盡某人的能力如： Zhou run as fast as her could/can. 她盡她最快的能力去跑。29. get into trouble with 遇到麻煩30. in the end 最后31. make a decision 下決定下決心32. to ones surprise 令某人驚訝如：to their surprise令他們驚訝to LiLeis surp

24、rise令李雷驚訝33. take pride in sth. 以而自豪如： His father always take pride in him. 他的爸爸總是以他而自豪34. pay attention to sth. 對注意，留心如：You must pay attention to your friend. 你應該多注意你的朋友。35. be able to do sth. 能做某事如：She is able to do it. 她能夠做到。36. give up doing sth. 放棄做某事如：My father has given up smoking. 我爸爸已經(jīng)放棄吸煙了

25、。37.不再 no more = no longer 如： I play tennis no more/ longer.我不再打網(wǎng)球。 not any more = not any longer如： I dont play tennis any more/longer. 我不再打網(wǎng)球。38. go to sleep 入睡九年級英語Unit31.語態(tài)：英語有兩種語態(tài)：主動語態(tài)和補動語態(tài)主動語態(tài)表示是動作的執(zhí)行者被動語態(tài)表示主語是動作的承受者 Cats eat fish. （主動語態(tài)）貓吃魚。 Fish is eaten by cats.(被動語態(tài))魚被貓吃。 被動語態(tài)的構(gòu)成由“助動詞be 及物動

26、詞的過去分詞”構(gòu)成助動詞be 有人稱、數(shù)和時態(tài)的變化，其變化規(guī)則與be 作為連系動詞時完全一樣。時態(tài)被動語態(tài)結(jié)構(gòu)例句一般現(xiàn)在 時am are +過去分詞is English is spoken in many countries.一般過去 時was +過去分詞were + 過去分詞This bridge was built in 1989.情 態(tài)動 詞can/shouldmay +be+過去分詞must/The work must be done right now. 被動語態(tài)的用法當我們不知道誰是動作的執(zhí)行者，或者沒有必要指出誰是動作的執(zhí)行者，或者只需強調(diào)動作的承受者時，要用被動語態(tài)。2.

27、allow sb. to do sth. 允許某人做某事（主動語態(tài)）如： Mother allows me to watch TV every night. 媽媽允許我每晚看電視。be allowed to do sth. 被允許做某事（被動語態(tài)）如：LiLy is allowed to go to Qinzhou. 莉莉被允許去欽州。3. get their ears pierced 穿耳洞讓/使（別人）做某事 get sth. done(過去分詞) have sth. done 如：I get my car made. = I have my car made. 我讓別人修好我的車4. e

28、nough 足夠形容詞enough 如：beautiful enough足夠漂亮 enough名詞如：enough food 足夠食物 enough to 足夠去做如：I have enough money to go to Beijing. 我有足夠的錢去北京。 She is old enough to go to school.她夠大去讀書了。5. stop doing sth. 停止做某事Please stop speaking.請停止說話。stop to do sth. 停止下來去做某事Please stop to speak. 請停下來說話。6. 看起來好像sb. seem to d

29、o sth. = it seems that +從句 He seems to feel very sad. It seems that he feels very sad. 他看起來好像很傷心。7. 系動詞不能獨立作謂語，要和表語一起構(gòu)成謂語。常用的連系動詞有：look, feel, be, become, get, turn, smell, taste, stay(保持), kept等。連系動詞除be 和become 等少數(shù)詞可接名詞作表語外，一般都是接形容詞。如：They are very happy. He became a doctor two years ago. She felt

30、very tired.8. 倒裝句: 由so助動詞(be/do/will/have)/情態(tài)動詞主語意為：也是一樣She is a student. So am I.她是一個學生，我也是。 She went to school just now. So did I . 她剛才去學校了，我也是 She has finished the work. So have I . 她已經(jīng)完成了工作,我也完成了。 She will go to school. So will he.她將去學校，他也是。9. yet 仍然，還常用在否定句或疑問句當中10. stay up 熬夜如：I often stay up

31、until 12:00pm.我經(jīng)常熬夜到12點。11. clean up 打掃整理如：I have cleaned up the bedroom. 我已經(jīng)打掃完了臥室。12. 程度副詞：always總是 usually經(jīng)常 sometimes有時 never從不 如：I am always/usually/sometimes/never late for school. 我總是/經(jīng)常/有時/從不上學遲到。13. 曾經(jīng)做某事：Do you ever get to school late? Yes, I do. No, I dont. Have you ever got to school lat

32、e? Yes, I have. No, I havent.14. go shopping(去購物), go fishing(去釣魚), go swimming(去游泳), go boating(去劃船), go hiking(去登山), go trekking(去徒步)15. be strict with sb. 對某人嚴厲如： Mother is strict with her son. 媽媽對她的兒子很嚴厲。16. take the test 參加考試pass the test 通過考試fail a test 考試失敗17. the other day 前幾天18. agree 同意反義詞

33、 disagree不同意 動詞 agreement 同意反義詞 disagreement 不同意名詞18. keep sb/ sth. 形容詞使某人/某物保持.如：We should keep our city clean.我們應該保持我們的城市干凈。19. bothand+動詞復數(shù)形式如： Both Jim and Li Ming play bastketball.20. learn (sth.) from sb. 向誰學習(什么) 如： Jim learnt English from his English teacher. 吉姆向他的英語老師學習英語21. have an opportu

34、nity to do sth. 有機會做某事 have a chance of doing sth. 有機會做某事 如：I have an opportunity to go to Beijing. I have a chance of going to Beijing.22. at present 目前23. at least 最少 at most 最多24. 花費 take ,cost, spend , pay sth. take (sb.) time to do sth. It took (me) 10days to read the book. sth. cost (sb.) The

35、book cost (me) 100yuan. sb. spend on sth. She spent 10days on this book. sb. spend doing sth. She spent 10days reading this book. sb. pay for sth. She paid 10yuan for this book.25. have +時間段+off 放假，休息 如：have 2 days off26. reply to 答復某人 如：She replayed to MrGreen.27. agree with sth. 同意某事 如：I agree wit

36、h that idea. agree to sb. 同意某人的意見 如：I agree to LiLei.28. get in the way of 礙事，妨礙 如： Her social life got in the way of her studies. 她的社會生活妨礙了她的學習。29. success n. succeed v. successful adj. successfully adv. 30. think about 與think of 的區(qū)別 當兩者譯為： 認為、想起、記著時，兩者可互用 I often think about/ of that day. 我經(jīng)常想起那天。

37、 think about 還有“考慮”之意 ，think of 想到、想出時兩者不能互用 At last, he thought of a good idea. 最后他想出了一個好主意。 We are thinking about going Qinzhou. 我們正在考慮去欽州。31. 對 熱衷， 對興趣be serious about doing 如：She is serious about dancing. 她對跳舞熱衷。be serious about sth. 如：She is serious about him. 她對他感興趣。32. practice doing 練習做某事 Sh

38、e often practice speaking English.33. care about sb. 關心某人 如：Mother often care about her son. 34. also 也 用于句中 either也 用于否定句且用于句末 too 也 用于肯定句且用于句末 I am also a student. 我也是一個學生 I am a student too. 我也是一個學生。I am not a student either. 我也不是一個學生。九年級英語Unit41. if 引導的非真實性條件狀語從句 即 虛擬語氣 通過動詞形式的變化來表示說話人對發(fā)生的動作或存在的

39、狀態(tài)所持的態(tài)度或看法的動詞形式稱為語氣，虛擬語氣表示說話人所說的話不是事實，而是一種祝愿，建議或是與事實相反的假設等。 If 引導的條件狀語從句分為真實和非真實條件句，非真實條件句應用虛擬語氣。如果要表示與現(xiàn)在或?qū)硎聦嵪喾磿r，其虛擬語氣結(jié)構(gòu)為：句 型條件從句主 句謂語動詞形式動詞過去式(be動詞用were)would+動詞原形 即：(從句)if +主語+動詞過去式(be 動詞用were), 一般過去時(主句) 主語+would+動詞原形 過去將來時 如：If I had time, I would go for a walk.如果我有時間，我就會去散步。(事實上我現(xiàn)在沒有時間) If I w

40、ere you, I would take an umbrella. 假如我是你的話，我會帶上雨傘。(事實上我不是你)I would say no if someone asked me to be in a movie. 假如有人請我當電影演員，我會表示拒絕。(事實上瑞沒有人請我當電影演員)2. pretend to do sth. 假裝做某事 I pretended to sleep just now. pretend +從句 假裝 I pretended that I fell asleep. 3. be late for 遲到 如： I am late for work/ school

41、/ class/ party.4. a few 與 a little 的區(qū)別，few 與 little 的區(qū)別 a few 一些 修飾可數(shù)名詞 a little 一些 修飾不可數(shù)名詞 兩者表肯定意義 如：He has a few friends. 他有一些朋友。 There is a little sugar in the bottle. 在瓶子里有一些糖。 few 少數(shù)的 修飾可數(shù)名詞 little 少數(shù)的修飾不可數(shù)名詞 但兩者表否定意義 如：He has few friends. 他沒有幾個朋友。 There is little sugar in the bottle.在瓶子里沒有多少糖。

42、5. still 仍然,還 用在be動詞之后，行為動詞之前 如： I am still a student.我仍然是個學生 I still love him.我仍然愛他。6. hundred, thousand , million, billion (十億)詞前面有數(shù)詞或several 一詞時要不能加s ，反之，則要加s 并與of 連用， 表示數(shù)量很多 如：several hundred/ thousand/ million/ billion people 幾百/千/百萬/十億人 hundreds of trees 上百棵樹7. what if + 從句 如果怎么辦 ， 要是 又怎么樣 如：

43、What if she doesnt come? 要是她不來怎么辦？ What if LiLei knows? 如果李雷知道了怎么辦？8. add sth. to sth. 添加到 如： I added some sugar to water. 我把糖添加到水里。9. 系動詞與形容詞連用 get nervous 變得緊張 feel shy 覺得害羞 look friendly 看起來友好10. too +形/副+to do sth. 太而不能 如： Im too tired to stand. 我太累了而不能站。11. help with sth. 如：They help with this

44、problem. help sb. do. 如：They help you relax. 他們幫助你放松12. in public 在公共場所 如:Dont smoke in public. 請不要在公共場所吸煙。13. energetic adj. 活力的 如：She is a energetic girl. 她是一個活力的女孩。 energy n. 活力 如：She has lots of energies. 她有活力。14. ask sb. to do 叫做某事 ask sb. not to do sth.叫不要做某事 tell sb. to do 告訴做某事 tell sb. not

45、to do sth. 告訴不要做某事如：Teacher asked me to clean the classroom. Teacher asked me not to clean the classroom.15. start doing = start to do. 開始做某事 如： He started speaking/ to speak. 他開始說話。16. borrow sth. from sb. 從某人那里借來某物 如： I borrowed a book from Lily. 我從莉莉那里借來一本書。17.wait for sb.等某人 如：I am wait for him.

46、 我正在等他。18. introduce sb. to sb. 把某人介紹給某人 如： I introduced Lily to Anna. 我把莉莉介紹給安娜。19. invite sb. to do 邀請某人做某事 如： Lily invited me to go to her home for supper. 莉莉邀請我去她家吃晚飯。20. have dinner/ supper 吃晚飯have lunch/ breakfast 吃午餐、吃早餐21. plenty of 修飾不可數(shù)名詞，也可以修飾可數(shù)名詞 許多 如： They have plenty of food/ apples. 他

47、們有許多的食物/蘋果。22. 給某人某物 give sth. to sb. 如： give an apple to me give sb. sth. give me an apple 給我一個蘋果23. get along with sb. 與相處 如： Do you get along well with your friends? 你和你的朋友相處得好嗎？24. would rather do sth. than do sth. 表示愿做某事而不愿做某事 如： I would rather walk than run. 25. whole 整個 26. in fact 事實上27. let

48、 sb. down 讓某人失望 如： Dont let your mother down. 不要讓你的媽媽失望。28. come up with sth. 提出 想出 如：He came up with a good idea. 他提出了一個好主意。 catch up with sb. 追上 趕上 如： Lily caught up with Anna. 莉莉趕上了安娜。29. have experience doing 在做某事有經(jīng)驗 如： I have experience teaching Chinese. 我在教英語方面有經(jīng)驗。30. come out 出版，出來 如：The maga

49、zine comes out once a week. 這種雜志每周出一次。31. by accident 偶然地，無意之中 如：Last week I cut my finger by accident. 上個星期我不小心割到自己的手指。32. hurry to do 匆忙 I hurry to call the police. 33. more than 超過34. offer sb. sth. 給某人提供某物賓語從句 賓語從句在復合句中作主句的賓語。 由連接詞+ 主語+ 謂語構(gòu)成 常由下面的一些詞引導： 由that 引導 表示陳述意義 that 可省略 He says (that) he

50、 is at home. 他說他在家里。 由if , whether 引導 表示 一般疑問意義(帶有是否、已否、對否等) I dont know if / whether Wei Hua likes fish. 我不知道韋華是否喜歡魚。 由 連接代詞、連接副詞(疑問詞) 引導 表示特殊疑問意義 Do you know what he wants to buy? 你知道他想要買什么嗎？ 從句時態(tài)要與主句一致 當主句是一般現(xiàn)在時，從句根據(jù)情況使用任何時態(tài) He says (that ) he is at home. 他說他在家里。 I dont know (that) she is singing

51、 now. 我不知道她正在唱歌。She wants to know if I have finished my homework. 她想要知道我是否已經(jīng)完成了我的作業(yè)。 Do you know when he will be back? 你知道他將會什么時候回來？ 當主句是一般過去時，從句應使用過去某時態(tài)(一般過去時,過去進行時，過去將來時，過去完成時) He said (that) he was at home. 他說他在家里。 I didnt know that she was singing now. 我不知道她正在唱歌。She wanted to know if I had finis

52、hed m homework. 她想要知道我是否已經(jīng)完成了我的作業(yè)。Did you know when he would be back? 你知道他將會什么時候回來？九年級英語Unit5現(xiàn)在完成時態(tài)由have/ has 過去分詞表示過去發(fā)生或已經(jīng)完成的某一動作對現(xiàn)在造成的影響或結(jié)果常與already, just , yet , ever, never 連用Have you finished your work yet？你完成了你的工作了嗎？Yes, I have. I have just finished it.是的。我剛剛完成了。I have already finished it .我已經(jīng)完成了。Have you ever been to China?你曾經(jīng)去過中國嗎？No, I have never been there.沒有，我從來也沒有去過。表示過去已經(jīng)開始，持續(xù)到現(xiàn)在的動作或狀態(tài)和表示過去某一時刻延續(xù)到現(xiàn)在（包括現(xiàn)在在內(nèi)）的一段時間的狀態(tài)連用如：（for + 時間段，since + 時間點，或