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o give away 贈送捐贈fix up 修理修補 = repair write the letter to thank (doing) up 建起設立make a(bit)difference to (很大);有(很大)作用(尤指好的方面)be excited about 對過去出來 be in control of 掌管;管理keep on(doing sth.)繼續(xù)或堅持(做某事)give up 放棄 in time 及時hurt oneself 割傷自己get/be hurt 受傷 cut oneself 割傷自己 be interested in 對;適應于驚訝的;出乎照料 two years down the forests 砍伐林木 animals and fewer pandas 大熊貓越來越少 in danger 處于危險之中 importance of saving these animals 拯救這些動物的重要性Unit 8Have you read Treasure Island一、重點短語 page 25 在第2 5 back of the book 書的背面 up 趕快。會 out(書、電影等) interested ……感興趣 to the other side fairy tale 一個神話故事 rest of the story do a plan to do lost 迷路 one’s plan do the moonlight one’ s way home 找到某人回家的路 next day Unit 7 W hat’s the highest mountain in the world?一、重點短語 big as 與…… of the oldest countries 最古老的國家之一 free to do far as I know 據(jù)我所知 objects o f.........的組成部分 highest mountain the w orld 在世界上 other mountain a ll the salt lakes 在所有的咸水湖中 along 跨越… … weather 冰凍的天氣 in a ir first people to do the face of difficulties up doing one’ s dream forces of nature 自然界的力量 the top though 雖然。第一篇:2014年春季新版人教版八年級下冊英語各單元重點短語(精選)Unit 6 An old man tried to move the mountains一、重點短語 on doing soon as......一……就….... upon a time to do to do journey to sp....... the/a story 講故事 on little b it 有點兒 doing up 放棄 of 代替。...into married main character 主要人物;主人公 other times able to 能。盡管 birth awake 醒著 over with excitement alk into ll over care of 照顧。 two weeks 在兩周之內(nèi) out to sea island full of treasures 一個滿是寶藏的島嶼 about 寫作關于…… doing for another ship to do fruits and vegetables 種水果和蔬菜 few weeks ago 幾個星期前 marks of another man’ s long after that 不久之后 towards ...to do ……來做某事 left behind by the newspaper 看報 fiction ’ t w ait to do good way to wake up of people 人數(shù) to do sth.(過去) abroad 在國外學習 to realize 開始意識到 since then southern states of America美國的南部地區(qū) to kind to each other 善待彼此 one another beauty of nature 大自然的美 been to some research on ……做研究 to do firs t line in the success in享受……的成功 the end of the day傍晚的時候第二篇:2014年新版人教版八年級下冊英語各單元重點短語免疫分為兩種,一種是非特異性免疫,是指人生來就有的,對多種病原體有防御作用,另一種是特異性免疫,是出生后逐漸建立起來的,只針對某一特定的病原體或異物起作用,在胚胎發(fā)育和嬰兒的成長的過程中,一是母體可以通過胎盤把一部分抗體可以傳給孩子,二就是通過母乳喂養(yǎng),母乳里面有很多的免疫物質(zhì),6個月以后母乳本身的抗體就降低了,再加上六個月以后活動范圍大,接觸傳染病的機會也多了,所以往往六個月以后病就多起來了.解:反射弧是生物體完成反射活動的基礎,a為感受器;b為傳入神經(jīng);c為神經(jīng)中樞;d傳出神經(jīng);e效應器.A、若此圖表示膝跳反射的反射弧,由于膝跳反射屬于低級的反射活動,是由脊髓控制的,所以c代表脊髓的神經(jīng)中樞.故不符合題意.B、若此圖表示學生聽到鈴聲進入教室的反射弧,這屬于高級的反射活動,是人類特有的反射活動.在聽覺的形成過程中,耳蝸能感受外界刺激,產(chǎn)生神經(jīng)沖動,所以感受器即為耳蝸,而鼓膜只起傳遞聲波振動的作用.故符合題意.C、若此圖表示人看到酸梅分泌唾液的反射弧,在視覺的形成過程中,視網(wǎng)膜上有感光細胞,能感受刺激產(chǎn)生神經(jīng)沖動,所以感受器即為視網(wǎng)膜,故不符合題意.D、若此圖表示使運動協(xié)調(diào)和維持身體平衡的反射弧,由于小腦具有協(xié)調(diào)身體平衡,維持身體運動的功能,所以代表小腦的神經(jīng)中樞.故不符合題意.分析:甲狀腺激素是由甲狀腺分泌的,它的主要作用是促進新陳代謝、促進生長發(fā)育、提高神經(jīng)系統(tǒng)的興奮性.解:破壞蝌蚪的甲狀腺,發(fā)現(xiàn)蝌蚪發(fā)育停止,不能發(fā)育成成蛙,說明蝌蚪發(fā)育成成蛙與甲狀腺有關;在飼養(yǎng)缸的水中放入甲狀腺激素,破壞甲狀腺的蝌蚪又發(fā)育為成蛙,說明甲狀腺激素能促進蝌蚪發(fā)育成成蛙,綜合分析以上實驗結果可以得出結論:甲狀腺分泌的甲狀腺激素能促進蝌蚪的發(fā)育.分析:呼吸肌的收縮和舒張而造成胸腔有規(guī)律的擴大與縮小,叫呼吸運動,包括吸氣和呼氣兩個過程;呼吸運動的基本意義是實現(xiàn)了肺的通氣,即肺內(nèi)氣體與外界氣體進行交換.解答:解:呼吸運動的過程是:平靜吸氣時,膈肌與肋間肌收縮,引起胸腔前后、左右及上下徑均增大,肺隨之擴大,形成主動的吸氣運動;當膈肌和肋間外肌舒張時,肋骨與胸骨因本身重力及彈性而回位,結果胸廓縮小,肺也隨之回縮,形成被動的呼氣運動.可見呼吸運動是由呼吸肌的收縮和舒張引起的.由于在氧含量高的地方,血紅蛋白與氧結合,使得血液呈現(xiàn)鮮紅色;在氧含量低的地方,血紅蛋白與氧分離,使得血液呈現(xiàn)暗紅色.由于空氣中的氧氣含量高,所以正面的血紅蛋白與氧結合,使血液呈現(xiàn)鮮紅色;背面的血紅蛋白因為玻璃阻隔不能接觸到空氣,所以不能與氧結合,故血液呈現(xiàn)暗紅色.第三篇:八年級下冊英語重點短語短文Unit 1 What’s the matter? 重點短語lie down 躺下 have a cold 感冒have a stomachache 胃痛take one’s temperature 量體溫 have a fever發(fā)燒go to a doctor 看醫(yī)生 get off 下車to one’s surprise 使意料 agree to(do sth)同意(做某事)get into trouble 造成麻煩(或煩惱)fall down 摔倒be used to習慣于 take risks(take a risk)冒險 run out(of)用盡 off 切除get out of 離開;從感興趣be ready to do ;樂意做某事 重點詞匯拓展 footfeet(pl.)lielying()lay(p.)hurthurt(p.)hithit(p.)knifeknives(pl.)meanmeat(p.)importance(n.)important(adj.)decision(n.)decide(v.)death(n.)die(v.)dead(adj.)diedying()died(p.)美文欣賞Saturday, June 5th,2013Early in the morning, Mum and Dad went out to visit their grandpa and I stayed at invited my friend Jim to my home and have lunch with planned to do homework I heard grandpa shout for we went to the living saw him lying on the said his right leg was hurt and he couldn’t move at didn’t know what to helped me call a taxi and move my grandpa to the hospital in doctor said there was noting put some medicine on grandpa’s leg and told him to stay in bed for several Mum and Dad came back, they thanked Jim for his 2 I’ll help to clean the city parks 重點短語clean up 打掃(或清除)干凈c