发布时间 : 星期一 文章2020年人教版英语八年级下册Unit7单元知识点讲解和练习(无答案)更新完毕开始阅读f9c47f09b107e87101f69e3143323968001cf463
My mother often prepares breakfast for me.
Are you preparing for an English test? 你正在为英语考试做准备吗？
33. run over to the keepers with excitement 兴奋地跑向饲养员，注意with短语表示伴随，with+名词， walk into撞上， fall over摔倒。
34. take care of =look after照看，照顾；照顾好take good care of=look after……well. 35. one’s own sth某人自己的……I have my own house. 我有了自己的房子。 Own作动词为“拥有”，owner为“主人”，the owner of……的主人；Who owns the house？=Who is the owner of the house？谁拥有这栋房子？=谁是这栋房子的主人？
36. a symbol of…….的象征The pandas are a symbol of China.大熊猫是中国的象征。
37. fewer than少于，后跟可数名词，fewer than 2000 pandas living in the forests少于两千只大熊猫生活在森林里。
38. die of +疾病，过度劳累等内部自身原因，死于……die of cancer 死于癌症
die from+事故、自然灾害等外部原因，死于……die from an accident死于一次事故 39.cut down 砍伐，cut down the forests砍伐森林
40.As the forests get smaller当森林逐渐变小， fewer babies fewer+可数名词复数，less+不可数名词，less water pollution更少的污染
41. the importance of …….的重要性 We should know the importance of protecting environment. 我们应当知道保护环境的重要性。The importance of doing sth干什么事的重要性。形容词为important。
42. do research 做调查研究； better understand更好地理解 better为well的比较级。The habits of …….的习惯, the endangered wild animals 濒危野生动物。
43. 一般将来时的there be句型结构为： （1）There will be…… There will be a football match next Friday. 下周五有一场足球赛。（2）There be going to be…… There is going to be a football match next Friday. 44. awake为形容词，醒着，keep awake保持清醒，be awake early早早醒来。I’m awake early every morning. 我每天早上醒来很早。I kept awake all night。我整整一晚上没睡。 45. fat 胖的，脂肪；sea life 海洋生物；rules on whales protection关于保护鲸的措施。 46. learn more about了解更多关于…….;stop putting rubbish into the sea 停止向海洋倒垃圾。The spirit of……的精神，The spirit of the Olympics is in our hearts forever。奥运精神永远留在我们心中。
47.whale parts sold to make things like candles and soap。 Sold为sell的过去分词，此处表示被动，作定语修饰前面的parts，被卖鲸的身体的部分可以制造东西。To make不定式表示目的。
48. be done表示被动语态，have to be done必须被做，have to be protected必须被保护；The pandas around the world have to be protected. 世界各地的大熊猫必须被保护。 49. be in danger 处于危险中，The whales are in danger. Achieve success取得成功 50. more /less crowded，更拥挤，没有….拥挤；注意crowded的比较级。
51. 被动语态：一般现在时：am/is/are+动词过去分词 English is spoken by many people。 一般过去时：was/were+动词过去分词 This book was written by him。
一般将来时：will/shall be+动词过去分词 Most of the trees will be cut down by people.
现在进行时：be+being+动词过去分词，正在被…….
现在完成时：have/has+been+动词过去分词，已经被……. 52.ill; sick; illness区别；举例说明
（1）She’s ill/sick in bed.（ill、sick作表语）她卧病在床。
（2）He is looking after his sick father.（sick作定语，ill不能作定语 ）他在照顾他生病的父亲。
（3）During his illness， his mother looked after him。（illness为ill的名词）。 53. come true 实现，achieve实现，二者区别：
My dream came true.目标物作主语。I achieved my goals. 目标物作宾语，我实现了我的目标。
54. nature为名词，自然；形容词为natural，自然的
Thinking seems a such natural process。思考是多么自然的过程。 There are many secrets in nature。 大自然中有好多秘密。
55. take turns to do sth轮流做某事。We take turns to clean the classroom。我们轮流打扫教室。
Unit8、Unit9、Unit10语法--------现在完成时 一、用法及定义
1.从过去开始的动作,一直持续到现在，对现在有影响。
2.表示曾经做过某事或已经做过某事，对现在造成的影响和结果。 1. for, since 2. already, yet, never, ever, just连用。
二、构成 have (has) done即have/has+动词过去分词。否定句：have/has+not；一般疑问句：have/has提句首；特殊疑问句：疑问词+have/has引导的一般疑问句？ 三、举例解释说明： 第一种用法：
Madam Qiu has worked in this school for more than thirty years.（for+时间段） Miss Lai and I have stayed here since October。（since+时间点） She has learnt English for three years.
She has learnt English since three years ago. 第二种用法：
I have just had my breakfast. （对现在的影响是：现在不饿了）
I have seen this film.（对现在的影响是：已经知道了这部电影的剧情） since + 过去时; for + 时间段;
标志词： recently; lately ; in the past few days; so far ; up to now ; until now 四、补充说明
（一）现在完成时连用的副词有：already （”已经” 用于肯定句 助动词后实义动词之前）yet (“已经” 用于疑问句的末尾处 / “还” 用于否定句的末尾处)never (“从不” 助动词后实义动词之前) ever（“曾经” 用于疑问句和肯定句 助动词后实义动词之前） just (“刚刚” 助动词后实义动词之前)
（二）have gone to、have been to、have been in
have been to: 去过某地 (但已经回来, 人不在某地) I have never been to Beijing。
have gone to: 去某地了 (说话时某人在去某地的途中或已在某地) He has gone to the US. 句中如果用ever, never, once(一次), twice(两次), three times(三次)等时间状语时, 用 have been to
have been in 表示“在某地呆多长时间”，常与表示一段时间的状语连用，如：since, for, 等。例如：
Mr. Brown has been in Shanghai for three days. 布朗先生来上海已经有三天了。
（三）英语动词根据词义可分为两种,一种是延续性的,一种是终止性的。终止性动词(也可称为非延续性动词或瞬间动词)，非延续性动词表示动作的发生与结束于一瞬间完成, 不能再延续, 所以它的现在完成时不能和表示延续的时间状语连用。 非延续动词与延续性动词的转换 (熟记)
come — be here ; leave/go — be away (from); borrow— keep ; buy — have; finish — be over; begin — be on ;die— be dead ; get to know — know; arrive/get to/ come / reach — be in/at; marry/get married (to) — be married (to); fall asleep/get to sleep — be asleep; join the club — be a member of the club; 举例如下： （1）He has been dead for 3 years. （2）I have had the TV for 5 years. （3）She has been married for 6years. （四）常用句型结构：
（1）It is (has been) + 一段时间+ since + 从句(一般过去时) It has been two years since his grandfather died. His grandfather has been dead for two years.
（2）This (That/ It ) is the first (second…) time + that + 从句（现在完成时） 1. 这是他第一次参观这家工厂。1. It is the first time that he has visited this factory. 2. 这是我第二次读这本书。2. This is the second time that I have read the book。
（3）This (That/It) is the best/ most interesting /finest /… + that + 从句（现在完成时） 这是我看过的最好的电影。It is the best film that I have ever seen.
（五）练习
一、用过去时或现在完成时填空：
1. “_______ you ________ (have) lunch ?” “Yes.”
“When _______ you _______ (have) it?” “I _____ (have) it at 12:00.” 2. “______ you _______ (write) a letter to your aunt yet?” “Yes, I _______. I _________ (write) one last week.”
3. “______ he _______ (finish) his homework?” “Not yet.” 4. “_______ they ever _____ (be) abroad?” “Yes, just once.” 5. Your father _____ just _______ (finish) his work. 6. Your father ________ (finish) his work just now. 7. Last term I ______ (learn) many English words. 8. They ______ (not read) the interesting books yet.
9. He ______ never _________ (go) to the science museum. 10. ______ you ever ________ (drink) coke?
11. “______ you ______ (buy) a dictionary? “ “Yes, I _______ .”
“Where __________ you _____________ (buy) it?” “ I ___________ (buy) it in a bookstore.” “When _________ you _______ (buy) it?” “ Yesterday.”
二、用since和for填空
1. ______ two years 2.______ two years ago 3. _____ last month 4.______ 1999 5._______ yesterday 6. _______ 4 o’clock
7. ____ 4 hours 8.____ an hour ago 9. ______ we were children 10. _____ lunch
time 11.______ she left here
12. He has lived in Nanjing ________ the year before last. 13. I’ve known him __________ we were children.
14. Our teacher has studied Japanese _________ three years.
15. She has been away from the city ___________ about ten years. 16. It’s about ten years __________ she left the city.
三、用have/has been to/in, have gone to及go的各种形式填空。
1) Where is Jack? He __________ his country. 2) David ________ the park just now.
3) John _______ England since he came back. 4) How long _____ have _____ this village? 5) The Smiths ______ Beijing for years.
6) _____ you ever ____ America? -- Yes, I _____ there many times. 7) I _____ this school since three years ago. 8) Where is Jim? He _____ the farm.
9) When_____ he _____? He _______ an hour ago. 10) Would you like to _____ the zoo with me? ---Yes, but I _____ there before.
11) Where _____ you _____ now? --- I ____ the zoo. 12) He often _____ swimming.
13) _____ you ______ there last year?
14) _____ they often ______ skating in winter?
四、综合练习:
I. 用never, ever, already, yet, for, since填空
1. I have _______ seen him before, so I have no idea about him.
2. Jack has _________ finished his homework ________ an hour ago. 3. Mr. Wang has taught in this school ________ ten years.
4. “Have you _______ seen the film?” “No, I have ________ seen it.” 5. “Has the bus left _______?” “Yes, it has _________ left.”