人教版小學(xué)英語5年級重點知識

《人教版小學(xué)英語5年級重點知識》由會員分享，可在線閱讀，更多相關(guān)《人教版小學(xué)英語5年級重點知識（24頁珍藏版）》請在裝配圖網(wǎng)上搜索。

人教版小學(xué)五年級英語上冊教材主要知識點歸納 一．詞匯． １．特征：youngfunnytallstrongkindoldshortthinstrictsmart activequiet(very) ２．星期：MondayTuesdayWednesdayThursdayFridaySaturdaySunday ３．活動：dohomeworkwatch TVread books ４．菜類：cabbagepork muttoneggplantfishgreen beanstofupotatotomato ５．味道等形容詞：tastysweetsourfreshsalty(favourite fruitgrape) ６．家務(wù)事：empty the trash cook the meals water the flowers sweep the floor clean the bedroom make the bed set the table wash the clothes do the dishes use a computer ７．房間，家具：bedroomkitchenbathroomlivingroom room curtain trash　bin　closet mirrorend tableair-conditioner ８．方位介詞：inonundernearbehindclothes ９．景物： riverflowergrasslakeforestpathparkpicturehousetreebridge roadbuildingclean(skycloudmoutainairvillagecity) 二，對話 1.－Ｗhos your art teacher/principal? -Mr Hu. 2.-Whats he like? -Hes short and thin. 3.-What day is it today? -Its ... 4.-What do we have on Mondays? -We have... 5.-What do you do on Saturdays? -I often do my homework. 6.-What would you like for lunch? -Id like ... 7.-Where is the trash bin? -Its near the table. 8.-Is this your bedroom? -Yes,it is. 9.-Is she young? -No,she s old. 10.-Can you do housework? -Yes,it is 三．句子 １．Im helpful. I can sweep the floor. 2. There is a forest in the nature park. 3.There are many houses in my village. 4.Its tasty. Its my favourite 人教版小學(xué)五年級英語上（第五冊）句型總匯PEP 紅體句子為四會句型 第一單元 Whos your English teacher? Mr Carter. Whats hi like? Hes tall and strong. Is she quiet? No,she isnt.Shes very active. Is she stict? Yes,she is,but shes very kind. I have three new teachers. Who are they? Hes from Canada. Her class is so much fun, 第二單元 What day is it today? Its Wednesday. What do you have on Thursdays? We have English,math and science on Thursdays. What do you do on Saturdays? I watch TV on Saturdays. What about you? I do my homework,too. Tomorrow is Thursday. Thats great! Its time to get up. Thats right! 第三單元 What do you have for lunch on Mondays? We have tomatoes,tofu and fish, Whats your favourite fruit? I like apples.Theyre sweet. I like fruit.But I dont like grapes.Theyre sour. What would you like for lunch? Id like some tomatoes and mutton. Im hungry. Here is our school menu. That sounds good. Its tasty. Its my favourite. Whats your favourite food? Bananas are my favourite . Im heavy now. I have to eat vegetables. 第四單元 What can you do? I can sweep the floor. I can cook the meals. I can water the flowers. Can you make the bed? No,I cant. Can you use a computer? Yes,I can. Im helpful. Are you helpful at home ? Youre helpful. Mother Goat is ill. We can help her. Just do it! But Id like to have a try! 第五單元 There are two bedrooms,a kitchen,a bathroom and a living room. There is a mirror,a bed and a big closet. The closet is near the table. Many clothes are in the closet. The trash bin is behind the door. Is this your bedroom? Come and look at my new curtains. I have my own room now. Whats it like? It’s on the third floor. I love my new room very much. Where is the trash bin? I work with it. Whats your room like? Can you tell me,please? 第六單元 Is there a forest in the park? Yes,there is. It there a river ? No,there isnt. Are there any pandas in the mountains? No,there arent. Are there any fish in the rivers? Yes,there are. There is a forest in the nature park. This is my holiday picture, There are many small houses in my village. The water is clean. The air is fresh. I can run on the grass. You can see many fish. There are many mountains near my village. There are no tall buildings. 三、將下列問句與對應(yīng)答句連線。（10%） 1、Who are they? A、It’s snowy. 2、What’s he like? B、I want to wear my sweater. 3、What’s his hobby? C、He’s tall. 4、What do you want to wear? D、They are my parents. 5、What’s the weather like tiday? E、Collecting stamps. 四、能力檢測。（15分） 1、將下列句子重新排序。（5分） （1）Oh, good. I like it. （2）Ok! Let me help you. Do you like this blue T-shirt? （3）Dad, we have a party this evening. What shall I wear? （4）No. It’s too big. （5）How about this red one? 2、閱讀理解。（10分） 閱讀，判斷下列句子對（√），錯（）。 My name is LiFang. I have a new friend. Her name is Linda. She lives in New York. Linda is eleven years. She likes playing chess. My hobby is playing chess,too. She often goes to school by bus. Her mother is a doctor. She goes to work on foot. Her father is a teacher. He goes to work by car. Every evening Linda does her homework. Her mother watches TVand her father reads newspapers. Linda will come to China soon. She is in England now. I’m excited. （ ）1、Lindia is a Chinese girl. （ ）2、Linda’s father is a doctor. （ ）3、Linda’s father reads newspapers in the evening. （ ）4、Linda’s mother goes to work by bus. （ ）5、LiFang likes playing chess 人教版(pep)小學(xué)五年級上期英語單詞過關(guān)測試卷 一、詞義打靶，為下列所提供的單詞選擇最正確的義項。 ( )1. young A.年輕的 B.你的 C.你們的 D.好吃的 ( )2. short A.小的 B.聰明的 C.矮的 D.強壯的 ( )3. Tuesday A.星期三 B.星期四 C.星期五 D.星期六 ( )4. Saturday A.星期五 B.星期六 C.星期天 D.星期一 ( )5. potato A.西紅柿 B.土豆 C.豬肉 D.茄子 ( )6. sweet A.甜的 B.酸的 C.咸的 D.聽起來 ( )7. helpful A.救命 B.幫助 C.有用的 D.幫忙 ( )8. robot A.尺子 B.橡皮 C.讀 D.機器人 ( )9. ill A.有病的 B.高的 C.在…里面 D.幫助 ( )10.bedroom A.衛(wèi)生間 B.廚房 C.臥室 D.客廳 ( )11.吃 A.eat B.read C.at D.ant ( )12.水果 A.floor B.fruit C.juice D.food ( )13.聽起來 A.losten B.sound C.fresh D.sour ( )14.洋白菜 A.vegetable B.tomato C.menu D.cabbage ( )15.午飯 A.breakfast B.supper C.lunch D.dinner ( )16.安靜的 A.quite B.quiet C.quick D.queen ( )17.知道 A.now B.know C.new D.love ( )18.喜歡 A.like B.look C.link D.love ( )19.加拿大 A.China B.Chinese C.Canada D.America ( )20.積極的 A.active B.strict C.kind D.smart 二、把下列單詞補充完整，把正確答案填在題前( )內(nèi)。 ( )1. t ll A. o B. u C. e D. a ( )2. str ct A. a B. e C. I D. o ( )3. Th sday A. ir B. ur C. ar D. er ( )4. w t A. ei B.an C.au D.ai ( )5. d y A. i B.o C.a D.u ( )6. f sh A. a B. e C. i D. o ( )7. f A. or B. au C. ou D. eu ( )8. ba room A. ch B. sh C. th D. tl ( )9. mu on A. dd B. tt C. ll D.ff ( )10. h sework A. au B. oa C. ou D. or 三、中英文連線。 empty the trash 做飯 at home 就這么干 cook the meals 澆花 just do it 試一試 water the flowers 倒垃圾 have a try 使用計算機 set the table 洗碗碟 play chess 收拾衣服 clean the bedroom 擺餐具 use a computer 下棋 do the dishes 打掃臥室 put away the clothes 在家 四、找出不同類的詞。 ( )1. A. wash B. set C. put D. housework ( )2. A. pork B. mutton C. beef D. tofu ( )3. A. tasty B. salty C. fresh D. sour ( )4. A. Sunday B. Saturday C. weekend D. Monday ( )5. A. Miss B. Mr C. lady D. teacher ( )6. A. apple B. orange C. grapes D. fruit ( )7. A. forty B. fourteen C. four D. number ( )8. A. food B. rice C. noodles D. dumpling ( )9. A. father B. mother C. brother D. grandfather ( )10.A. thirty B. thirteen C. twenty D. fifty 五、判斷正誤： 1.have 有 ( ) 2.often 以后 ( ) 3.for 4 ( ) 4.menu 菜單 ( ) 5.but 但是 ( ) 6.Fri 星期五 ( ) 7.Thu 星期二 ( ) 8.fun 有趣 ( ) 9.tomorrow 今天 ( )10.too 二 ( ) 六、找朋友。 A. sweep the floor ( ) 鋪床 B. wash the windows ( ) 掃地 C. do housework ( ) 擦窗戶 D. make the bed ( ) 青豆 E. set the table ( ) 做家務(wù) F. wash the clothes ( ) 做作業(yè) G. green beans ( ) 擺飯桌 H. do homework ( ) 洗衣服 人教版(pep)小學(xué)六年級下冊(6b)英語常用動詞、介詞短語復(fù)習(xí) 動詞短語 clean the floor 掃地 clean the house 打掃房間 collect stamps 集郵 come back 回來 come from 來自…… come here 來這里 come in 進來 come on 過來/加油 come to tea 來喝茶 cook the meal 煮飯 crash into 撞向 dig a hole 挖坑 do housework 做家務(wù) do morning exercises 晨練 do one’s homework 做作業(yè) do some reading 讀點書 do sports 做運動 draw a picture 畫畫 drink some water 喝些水 drive a car 駕車 fall over 跌倒 fill the hole with earth 用泥土填坑 get off 下車 get out of 走出（……之外） go and have a look 去看一看 go back 回去 go boating 去劃船 go fishing 去釣魚 go for a walk 去散步 go home 回家 go on a diet 節(jié)食 go out 出去 go shopping 去購物 go sightseeing 去觀光 go skating 去溜冰 go skiing 去滑雪 go straight on 直走 go swimming 去游泳 go to bed 去睡覺 go to school 去上學(xué) go to the cinema 去看電影 go to work 去上班 have a bath 洗澡 have a Chinese lesson 上語文課 have a cold 感冒 have a fever 發(fā)燒 have a good time 玩得開心 have a headache 頭痛 have a look 看一看 have a picnic 舉行野餐活動工 have a rest 休息 have a stomachache 胃痛 have a tooth-ache 牙痛 have a trip 去旅游 have a try 試一試 have been to 到過 have breakfast 吃早餐 have fun 玩得開心 have lunch 吃午飯 have some coke 喝些可樂 have supper/dinner 吃晚飯 have time 有時間 just a minute 等一下 just now 剛才 keep a diary 記日記 let me see 讓我想一想/讓我看一看 listen to music 聽音樂 listen to the CDs 聽CD 碟 listen to the radio 聽收音機 make friends 交朋友 make the bed 整理床鋪 mark the pupils’ homework批改作業(yè) next to 下一個 no problem 沒問題 paint a picture 涂畫 pick up 撿起 plant trees 種樹 play badminton 打羽毛球 play basketball 打籃球 play cards 打牌 play football 踢足球 play games 玩游戲 play table tennis 打乒乓球 play tennis 打網(wǎng)球 play the guitar 彈吉他 play the piano 彈鋼琴 put away 放好 put on 穿上 put the tree into the hole 把樹放進洞里 ride a bike 騎自行車 see a film 看電影 surf the Net 上網(wǎng) take a message 傳遞信息 take exercise 進行鍛煉 take medicine 服藥 take off 脫下 take photos 照相 turn off 關(guān)閉 turn on 打開 wait a moment 稍等一下 wait for 等候 wash clothes 洗衣服 wash dishes 洗碟子 watch a football match 看足球賽 watch TV 看電視 water the flower 澆花 water the tree 澆樹 write a letter 寫信 介詞短語 a glass of 一杯…… a lot of 許多…… a map of 一幅……的地圖 a pair of 一雙…… a picture of 一幅……的畫 a plate of 一碟…… agree with 同意…… all of them 他們大家 all of us 我們大家 at first 首先 at home 在家 at last 最后 at night 在晚上 at school 在學(xué)校 at the top of 在……頂部 at the weeken 在周末 be good at 擅長于…… be made of 由……制造 by the road 在路邊 by the way 順便問問 close to 靠近…… different from 不同于 fall down 跌倒 far away from 遠(yuǎn)離 from then on 從那時起 from…to… 從……到…… full of 充滿 get off 下車 get on 上車 get out of 走出……之外 get to 到達(dá) go on 繼續(xù) hand in 上交 help…with… 幫助某人做某事 in English 用英語 in front of 在……前面 in the afternoon 在下午 in the east / south / west /north在東/南/西/北方 in the evening 在晚上 in the middle 在中間 in the morning 在早上 in the sky 在空中 in time 及時 in trouble 遇到麻煩 It’s time to 是該……的時候了。 late for 遲到 look for 尋找 not at all 根本不 on foot 步行 on holiday 度假 on Monday 在星期一 on September 1st 在九月一日 on the farm 在農(nóng)場 on the left 在左邊 on the right 在右邊 on time 準(zhǔn)時 play with 與……玩 put on 穿上 sit down 坐下 stand up 起立 start for 出發(fā)前往 talk to 和……交談 Thank you for… 感謝你的…… wait for 等待 wake up 醒來 特殊疑問詞 what 什么 where 哪里 who 誰 whose 誰的 when 什么時候 how 怎樣 which 哪一個 what time 什么時候 what colour 什么顏色 what language 什么語言 what subject 什么科目 what class 什么班 what day 星期幾 what date 日期 how many 多少 how much 多少錢 how often 多經(jīng)常 how long 多長時間 how old 多大 how tall 多高 how heavy 多重 why 為什么 縮寫詞 I’m = I am It’s = it is he’s = he is she’s = she is you’re = you are they’re = they are that’s = that is isn’t = is not aren’t = are not don’t = do not doesn’t = does not wasn’t = was not weren’t = were not hasn’t = has not haven’t = have not can’t = cannot won’t = will not we’ll = we will who’s = who is what’s = what is let’s = let us here’s = here is No. = number 常見介詞 （一）方位介詞 in 在……里面 at 在……（小地方） on 在……上面 under 在……下面 in front of 在……前面 behind 在……后面 beside / by 在……旁邊 near 在……附近 over 在……上方 outside 在……外面 between…and… 在……與……之間 next to 緊挨著 in the middle 在中間 （二）其他介詞 at… 在……點鐘 for 給，為了，作為 to 到…… from 來自 from…to… 從……到…… of ……的 by 乘（坐）……交通工具 with 用……，和……一起，帶…… into 進去 out 外面 up 向上 down 向下 before 在……之前 after 在……之后 時間詞和短語 year年 month 月 week周 date日期 day 日 hour 小時 morning 早上 afternoon 下午 evening 晚上 the day before yesterday 前天 yesterday 昨天 today 今天 tomorrow 明天 the day after tomorrow 后天 last year去年 last month 上個月 last week 上個星期 next year 明年 next month 下個月 next week 下周 人教版(pep)小學(xué)六年級下冊(6b)英語單詞歸類 反義詞 big---small black---white free---busy beautiful---ugly hot---cold cool---warm clean---dirty new---old easy---hard noisy---quiet tall---short long---short young---old here---there before---after same---different 二． 單詞歸類 1.國家（country） China中國 America美國 Australia澳大利亞 Japan日本 England英國 Canada加拿大 France法國 Germany 德國Russia俄羅斯 New Zealand新西蘭 2.國籍(nationality) Chinese中國人 American美國人 Australian澳大利亞人 Japanese日本人 English英國人 Canadian加拿大 French 法國人 German 德國人 Russian俄羅斯人 3.語言（language） Chinese漢語 Japanese日語 English英語 French 法語 German 德語 Russian俄語 4.科目（subject） Chinese語文 maths 數(shù)學(xué) English 英語 art 美術(shù) music音樂 P.E. 體育 history 歷史 science科學(xué) 5.星期(week) Sunday星期日 Monday星期一 Tuesday星期二 Wednesday星期三 Thursday星期四 Friday星期五 Saturday星期六 6.季節(jié)(season) spring 春天 summer夏天 autumn秋天 winter冬天 7.月份(month) January一月 February 二月 March三月 April四月 May五月 June 六月 July 七月 August 八月 September 九月 October 十月 November十一月 December十二月 8.節(jié)日（festival） Spring Festival 春節(jié) Dragon Boat Festival龍舟節(jié) Mid-autumn Festival中秋節(jié) New Year’s Day元旦 National Day 國慶節(jié) Children’s Day兒童節(jié) Easter復(fù)活節(jié) Halloween萬圣節(jié) Christmas 圣誕節(jié) Women’s Day婦女節(jié) Teacher’s Day 教師節(jié) May Day勞動節(jié) 9.食物(foods) cake蛋糕 mooncake月餅 dumpling 餃子 bread 面包 pork豬肉 fish魚肉 chicken 雞肉 meat肉 egg雞 蛋 sandwich三文治 pizza 比薩餅 hamburger 漢堡包 noodles 面條 10.時間(time) year年 month 月 week周 date日期 day 日 hour 小時morning早上 afternoon下午 evening晚上 the day before yesterday 前天 yesterday昨天 today今天 tomorrow明天 the day after tomorrow后天 last year去年 11.服裝（clothes） T-shirt文化衫 shirt 襯衫 skirt短裙 dress 長裙 sweater毛線衣 coat 大衣 blouse 女襯衣 shorts短褲 jeans牛仔褲 hat帽子 cap帽子 shoe鞋子 sock 短襪 stocking長襪子 12．動物（animals） chicken雞 duck鴨 goose鵝 dog狗 cat 貓 pig豬 sheep綿羊 goat 山羊 horse馬 lion獅子 tiger老虎 elephant 象snake蛇 kangaroo 袋鼠 monkey 猴子 bear 熊 panda熊貓 whale鯨 turtle烏龜 frog青蛙 mouse老鼠 poler bear北極熊 giraffe長頸鹿 seal海豹 guinea pig豚鼠 deer鹿 13．顏色（colour） grey 灰色 red紅色 green綠色 yellow黃色 blue藍(lán)色 white白色 black黑色 pink粉紅色 orange橙色 brown褐色 purple紫色 14.飲料（drinks） juice汁 milk 牛奶 coke可樂 tea茶 coffee 咖啡 soup 湯 15．?dāng)?shù)字 1．基數(shù)詞one 一 two 二 three三 four四 five五 six 六 seven七 eight八 nine 九 ten十 eleven 十一 twelve 十二 thirteen 十三fifteen十五 twenty二十 thirty 三十 forty 四十 fifty五十 hundred 百 thousand 千 million百萬 2．序數(shù)詞：first 第一 second第二 third第三 fifth第五 ninth第九 twelfth 第十二 twentieth 第二十 thirtieth第三十 16．植物、水果 tree 樹 flower花 leaf葉 seed種子 grass草 rose 玫瑰 lily百合 sunflower 向日葵tulip 郁金香 bluebell風(fēng)鈴草 violet 紫羅蘭 vegetable蔬菜 onion洋蔥 tomato西紅柿 potato馬鈴薯 cabbage大白菜 carrot胡蘿卜 mushroom蘑菇 fruit 水果 apple蘋果 pear 梨 orange橙 banana 香蕉 grape葡萄 peach桃子 17．職業(yè)（jobs） worker工人 farmer農(nóng)民 soldier士兵 doctor醫(yī)生 nurse護士 teacher 教師 driver司機 cook廚師 policeman警察 footballer足球運動員 lawyer律師 dentist 牙醫(yī) waiter男服務(wù)員 waitress女服務(wù)員 athlete 運動員 bank clerk銀行職員 18、自然界 sun太陽 moon月亮 star星星 sky天空 river江河 lake 湖 sea大海 hill山 mountain山脈 snow雪 wind風(fēng) cloud云 rain雨 19、天氣(weather) sunny陽光充足的 windy有風(fēng)的 cloudy多云的 snowy下雪的 rainy下雨的 dry干燥的 wet濕的 warm暖的 cool涼爽的 cold冷的 hot熱的 20、人體部分 head頭 hair頭發(fā) hand手 face臉 eye眼 ear耳朵 nose鼻子 leg腿 foot腳 21、人、家庭與親屬 people人們 person人 man男人 woman婦女 lady女士 child小孩 baby嬰兒 grandfather爺爺 grandmother奶奶 parent父母 father父親 mother母親 sister姐妹 brother兄弟 daughter女兒 son兒子 cousin堂兄 uncle舅舅、叔叔 aunt姨 22、文具 pen鋼筆 pencil鉛筆 rubber橡皮 ruler尺 knife小刀 map地圖 dictionary字典 23、建筑與房屋部分 1)臥室bedroom 客廳living-room 廚房kitchen 花園garden 廁所toilet 書房study 辦公室office 2) buliding建筑 bank銀行 school學(xué)校 hospital醫(yī)院 cinema電影院 park公園 park動物園 shop商店 bookstore書店 playground操場 market市場 gym體育館 post office郵局 TV station電視臺 hotel賓館 3)墻wall 地板floor 窗window 門door 24.日用品 camera 照相機 telephone電話 clock鐘 lamp燈 fridge冰箱 cup杯 glass玻璃杯 box盒子 bowl碗 plate碟 25．方向 left左 right右 east東 south南 west西 north北 26.家具 bed床 desk書桌 table桌子 chair椅子 bench長凳 stool凳子 wardrobe衣柜 shelf架子 27.餐食 meal一頓飯 breakfast早餐 lunch 午餐 dinner晚餐 28．交通工具 bus公共汽車 train火車 truck卡車 car小汽車 bike自行 ship輪船 motorbike摩托車 boat小船 plane飛機 spaceship宇宙飛船 29.玩具 toy玩具 doll玩具娃娃 kite風(fēng)箏 ball球 30.外貌 tall高的 short矮的 fat胖的 healthy健康的 good-looking 好看的beautiful美麗的 ugly丑陋的 strong強壯的 old 老的 young 年輕的 heavy重的 cute 可愛的 handsome英俊的 31.圖形（shapes） circle圓形 triangle三角形 rectangle長方形 square正方形 四．動詞詞組 go shopping去購物 go fishing去釣魚 go boating去劃船 go swimming 去游泳 go sightseeing去觀光 go skiing 去滑雪 go skating去溜冰 go for a walk 去散步 go to the cinema 去看電影 go to bed去睡覺 go to school去上學(xué) go to work去上班 go on a diet節(jié)食 go back回來 go out出去 get out of 走出（…之外） play football 踢足球 play basketball打籃球 play table tennis打乒乓球 play tennis打網(wǎng)球 play badminton 打羽毛球 play the piano 彈鋼琴play the guitar彈吉他 play games玩游戲 play cards打牌 surf the Net上網(wǎng) write a letter寫信 listen to the radio聽收音機 listen to music聽音樂 listen to the CDs 聽CD 碟 watch TV 看電視watch a football match看足球賽 see a film 看電影 take photos照相clean the house打掃房間 wash clothes洗衣服 wash dishes洗碟子 mark the pupils’ homework批改作業(yè) draw a picture畫畫 paint a picture涂畫 have breakfast 吃早餐 have lunch 吃午餐 have dinner 吃晚飯 do housework 做家務(wù) do one’s homework做作業(yè) do some reading讀書 have a Chinese lesson 上語文課 take a message傳遞信息 have a fever發(fā)燒 have a headache頭痛 have a cold感冒 have a stomachache胃痛 have a tooth-ache牙痛have a bath洗澡 have been to到過 have fun玩得開心 turn on打開 have a look看一看 take exercise進行鍛煉 take medicine服藥 clean up打掃 come to tea來喝茶 fall over跌倒 take photos照相 dig a hole挖坑 put the young tree into the hole把小樹放進洞里 fill the hole with earth用泥土填坑 water the tree澆樹 plant trees種樹 keep a diary記日記 pick up撿起 wait for等候 crash into撞向 五． 介詞短語 by the way 順便問問 be good at擅長于 at the top of在…頂部 at first首先 at last 最后 agree with 同意 a picture of 一幅…的畫 a pair of 一雙 a lot of 許多 close to 靠近 far away from遠(yuǎn)離 different from 不同于 from then on從那時起 from…to…從..到 … full of充滿 get out of 走出…之外 go on 繼續(xù) on the farm在農(nóng)場 help…with…幫助某人做某事 in front of在…前面 in the sky 在空中 in trouble遇到麻煩 look for尋找 in English用英語by the road在路邊 put on穿上 wait for等待 wake up醒來 on foot步行 start for 出發(fā)前往 all of us我們大家 all of them他們大家 in the morning 在早上 in the afternoon在下午 in the evening在晚上 at night在晚上 at school 在學(xué)校 at home在家 六、 基數(shù)詞變序數(shù)詞一般加th.特殊情況: one ---first第一 two---second 第二 three---third第三 f