外研版八年级下册3~4知识点

1、1.be up to从事于从事于2.be sure to do sth.3.how to make it4.No problem5.hear the latest news6.Thats why its on the news.7.Have they discovered the life on Mars 8.Astronauts have already been to the moon.9.No one has been to Mars yet.10.far away遥远遥远11. in order to + v. (可以放在句首，也可位于句中可以放在句首，也可位于句中) = so as

2、to + v. (只能放在句中，不能位于句首只能放在句中，不能位于句首) = in order that + 从句从句(引导目的状语从句引导目的状语从句) = so that + 从句从句(引导目的状语从句引导目的状语从句)We started early 【to catch 】the first bus to the Great Wall.=【In order to catch】 the first bus to the Great Wall,we started early.=We started early 【so as to/in order to catch】 the first b

3、us to the Great Wall.=We started early 【so that/in order that we could】 catch the first bus to the Great Wall.12.get information on space travel13. get online to do sth.14. search for information15. get online to do sth. to search for information 1.on the earth 在地球上在地球上 on earth 在世界上，在世界上， 到底，到底， 究竟

4、究竟2. There has been life on the earth for hundreds of millions of years.3. The earth goes around the sun.4. None of them has an environment like the earth.5. far away6. have / has to do sth.7. How large is the universe?8. imagine doing sth.9. take photos10. far enough / old enough / strong enough en

5、ough time / food / money girls11. communicate with sb. 1.space station航天站航天站2. as.as和和一样一样3. finish doing sth.4.look after 以以 命名命名Module 4 Seeing the doctors 1. exercise 锻炼锻炼(不可数名词不可数名词)练习；体操练习；体操(可数名词可数名词) Eg：To keep healthy, my grandfather does morning exercise everyday. After reading th

6、is passage, you should finish some exercises.2. 常见表示生病的名词常见表示生病的名词： cough 咳嗽咳嗽 fever 发烧发烧 headache 头痛头痛 stomachache 胃疼胃疼 toothache 牙痛牙痛3. How can I help you?= What can I do for you? Eg：-What can I do for you? -Yes, please.4. feel ill 感觉生病了感觉生病了 ill为形容词，意为为形容词，意为“有病的，不健康的有病的，不健康的” illness(n.) 病情病情Eg：

7、He cant come to school, because he is ill today.5. catch a cold= have a cold 感冒感冒 caughthave a stomachache have a fever have a cough have a headache have a toothache Eg：-Whats wrong with you? -I catch a cold.6. take ones temperature 量量sb的体温的体温 fast food 快餐快餐 have breakfast/lunch/supper/dinner (一日三餐前

8、不需要冠词一日三餐前不需要冠词)7. what about doing sth= how about doing sth 做做sth怎么样怎么样?(表示提出表示提出建议建议) Eg：-What about going shopping this weekend? -Good idea.8. be harmful to sb/sth = do harm to sb/sth 对对sb/sth有害有害 harmless(adj.) 无害的无害的Eg：Smoking is harmful to your health. =Smoking does harm your health.9. health(

9、n.) in good/bad health 身体健康身体健康 healthy(adj.) = fit keep/stay healthy 保持健康保持健康 Eg：My grandparents are in good health. We should do more exercise to keep healthy.10. take the medicine 吃药吃药 three times a day 一天三次一天三次(表示频率，常用于回答表示频率，常用于回答how often的提的提问问)Eg：-How often do you come back home? -Once a week

10、.11. feel well 感觉舒服感觉舒服 (此处此处well表示感觉身体好，不能用表示感觉身体好，不能用good.) active(adj.) 积极的，活跃的积极的，活跃的 activity(n.) 活动活动 activities Eg：Is Tom an active boy? We can take an active part in lots of activities after school.12. by doing sth 通过做通过做sth (某种方式某种方式)Eg：He learns English well by listening to the radio every

11、 morning.13. decide to do sth 决定去做决定去做sth make a dicision to do sth What a great idea! (复习感叹句复习感叹句) Eg：He decides to become a teacher in the future. How tall the building is! = What a building it is!14. take part in 参加参加 (take an active part 积极参加积极参加) train n.火车火车 v. 训练训练,培训培训Eg：Did you take part in

12、 the training of the sports meeting? 【拓展拓展】join：加入：加入(党派，组织党派，组织) join in：参加：参加(某项活动某项活动) Eg：He joined the Party last year. He joined in the game.15. sleepy(adj.) 困乏的，欲睡的困乏的，欲睡的 Eg：I stayed up(熬夜熬夜) last night, so I feel sleepy now.16. in+月份月份/年份年份(无需用定冠词无需用定冠词) become part of 成为成为的一部的一部分分daily(adj.

13、) 日常的日常的 daily life 日常生活日常生活17. why dont you/we do sth? = why not do sth? 为什么不去做为什么不去做sth呢呢?(表示提建议表示提建议) Eg：Why dont you go the park with your friend? Why dont your ask your teacher for help?18. enjoy doing sth enjoy oneself= have a good/wonderful time 19. Perhaps I am too weak to do any exercise.Pe

14、rhaps(adv.) 意为意为“也许也许” 常放于句首常放于句首 Eg：Perhaps Tony is in his room.too+形容词形容词/副词副词 to do sth 太太而不能而不能 Eg：He is too young to look after himself.tooto结构可与结构可与sothat或者或者notenough to do互换互换 Eg：The car is too expensive for him to afford. =The car is so expensive that he cant afford it. =The car is not chea

15、p enough for him to afford.20. in hospital 住院住院 go to school 上学上学in the/a hospital在医院在医院 go to the school 去学校去学校 Eg：Tom is ill in hospital. She works as a nurse in a hospital. 21. develoing 发展中的发展中的 develop(v.) 发展；形成，养成发展；形成，养成(习惯习惯)developed 发达的发达的 development(n.) 发展发展 set up 建立，设立，开设建立，设立，开设 Eg：China is a developing country. America is developed country. We must develop childrens reading hab