新牛津八年级Unit4最全知识点(自己整理)

1、8b unit4 do it yourselfcomic strip & welcome to the unit 42431.1 nstruction ， n. 指示 carry out an instruction 执行命令 give instructions 下达指令2. you d better （ not） do sth 你最好做/不做某事，用于表示对别人的劝告、建议或表示一种愿望you d better read english every morning.3. say 写着（纸上，报纸上，电视，通告，海报）the tv says that there will be a heavy

2、 rain tonight.the weather report says that it s going to rain tomorrow.4. exactly ， adv. 确切地，精确地his answer is exatly right.exact， adj. 确切的，精确的it is difficult to tell her exact age.5. stand for,代表，象征 prc stands for peoples republic of china.roses stand for love. what does the word stand for?6. repair

3、， v. 修理 he is repairing desks and chairs in the classroom.7. instead of 代替，而不是（ sb/ sth/ doing sth）we will ask lucy instead of lily. tonight i will stay at home instead of going to the cinema.* instead of 与 instead 的同义句转换she went swimming instead of playing basketball. = she didn t play basketball.

4、she went swimming instead.8. pay 付钱 （ pays， paid ， paying ）sb pay money for sth 付钱买she paid much money for this dress.pay sb money to do sth 付钱给某人做某事yesterday i paid him 20 to repair my bike. how much money will you pay him to repair your bike?9. what do you need for that? = what do you need for mak

5、ing paper roses?reading 44461. be crazy about （doing） sth 对着迷 tom is crazy about music.2. terrible ， adj. i feel terrible that they didn t invite me to the party.what terrible weather it is!3. he once tried to put in a brighter light in his bedroom, but he made a mistake.* once ， adv. 曾经，一度， be 动词之后

6、，行为动词之前；当表示过去的经验或经历时，也可放在句首once he worked in the factory.this film was once very popular, but nobody sees it now.一次，一回，常用语句末we have been there once.* put in ，安装 how much does it cost to put in new windows? make a mistake 犯错误 he made many mistakes in spelling.4. have a power cut 停电5. another time, he

7、 wanted to put up a picture on his bedroom wall, but he hit a pipe and filled the room with water.* another time 还有一次* put up 张贴 put up the map on the wall.* fillwith 用 充满 he filled glasses with water.* be filled with = be full of 充满 the schoolbag is filled with books. = the schoolbag is full of bag

8、s.6. paint sth + 颜色 把 涂成 .颜色 i want to paint the wall orange to make me feel excited.7. keep on doing sth. 继续做某事keep on trying, and you ll be success.keep sb. doing sth. 让某人一直做某事the boss kept the workers working.8. not onlybut also 不仅 而且 * 连接两个主语时，遵循就近原则，谓语动词同 but also 后的主语保持一致not only lucy but also

9、 her parents are crazy about football.* 常用来连接两个对等的成分， also 可省略she is not only our teacher but also our friend. she not only sings well but also dances beautifully.9. advise， vt. 建议* advise sb. to do sth. 建议某人做某事he advised me to buy a new computer.* advise sb. not to do sth. 劝告某人不要做某事i advised him no

10、t to eat too much.* advice ，不可数 n. a piece of advice10. take a course in +课程11. already， adv. 已经，一般用于肯定句中they continued working, though it was already midnight.12. attend ， vt. 经常去，定期去（某处） ，出席，参加we attend the same school. did you attend the meeting? attend the weddinggrammar 4748一、定义：用于表达命令、请求、劝告、警告

11、、禁止的句子。二、标识： * 动词原形开头 * 用于第二人称（省略you） go and wash your hands.三、句型：肯定句 * do sth please open the door. * be+ 表语（ adj./n） be careful. be a good student.* let sb do sth let me help you.let s go camping.否定句： * don t do sthdon t open the door. * don t be +表语don t be late again.* don t let sb do sth/ let s

12、b not do sthdon t let him go. = let him not go.* no doing sth no smoking./ no parking.四、祈使句的回答（将来时）don t shout here.ok, i won t.五、祈使句反意疑问句 * 一般情况下， will you/ won t you?* let s do sth, shall we? let us do sth, will you?1. cut out 剪出2. one.the other （两者）theres a shop on one side of the road and theres

13、 a bookshop on the other sideanother （三者及以上） from one to another3. give up sth/ doing sthgive up hope give it up he gave up smoking.4. 祈使句 +and/or+ 句子 （将来时） study hard, and you will pass the exam./ study hard, or you won t pass the exam. hurry up, or you will be late.5. start sth with sthlet s start

14、 our today s lesson with a song.1、 should * 应该（情态动词） * should do sth / shouldn t do sth * 无人称变化* 表示劝告、建议、义务* 比 must 语气委婉all of us should join in the activity. he shouldn t be late for school again. should we put the books on the shelf? yes, you should./ no, you shouldn t.2、 had better * 最好 * had bet

15、ter do sth/ had better not do sth * 无人称变化* 表提出建议* 比比 should 语气更强烈，表命令语气you d better water the flowers as soon as possible.we d better listen to the teacher carefully in class.we d better not talk in class.三、相似句型would you please do sth/ not do sth?would you please come earlier? would you please not m

16、ake so much noise.why not do sth = why don t you do sthwhy not go there by bus? = why don t you go there by bus?1. mix ， v. 混合 the two colours don t mix well.mix a with b 把 a 和 b 混合在一起mix the eggs with the flour.mixed adj. a mixed school2. add， vt. 增加，补充please add some salt to the soup. he added, “b

17、e careful. ”3. cut .into.he cut the cake into small pieces. he cut the apple into two halves.4. tip ， n. 提示 he always gives me some useful tips.5. fruit in season 当季水果6. such as + n. 短/doingi have some hobbies such as, swimming, running and climbing.for example, + 句子 people have different hobbies. f

18、or example, i like swimming best.7. make sure,确保，查明，弄清楚，其后可接of, about,动词不定式或that从句make sure of it before you start out.* make sure to do sth please make sure to finish the work on time.* make sure + (that) 句子 make sure that you turn off all the lights before you leave.8. prepare， vt. 准备* prepare sth

19、 for sb* prepare to do sth* prepare for sthshe prepared a nice breakfast for us.i prepare to make a big dinner.he is busy preparing for the dinner.9. some of the fruit will quickly turn brown when you leave it in the air for some time.* turn + 颜色 变得* leave * 离开 leave beijing for shanghai* 留下，落下leave

20、 him at home leave my umbrella in the library* 使.处于某种状态leave sb/ sth + adj. / 介词短语 / v-ingleave the door closed leave the light ondon t leave the water running leave them in the dark10. some time 一段时间 some times 几次sometime 某个时候 sometimes 有时11. stop doing sth 停止做某事stop talking. the teacher is coming.

21、stop to do sth 停下来去做某事you look tired. why not stop to have a rest.12. correct incorrect correctly incorrectlyanswer all the questions correctly1. certain 确定的 uncertain certainly （sure）* be certain that .i am certain that our team will win the match.* be certain to doour team is certain to win the match.2. active adj. 活跃的，积极的 inactive activity she is an active girl.be active in sth 在 .积极 she is active in sports.he takes an active part in school activities.3. possible ， adj. 可能的 it is possible to pass the exa