选修六unit4知识点.docx

1、选修六unit4知识点选修六unit4知识点。U4(选修六) on/ upon+ n 依靠,依赖, 确(坚)信You cant depend on your parents forever.depend on/upon+sb.+to do 指望某人做You cant depend on him to come on time.depend on/upon +it +that. 指望. You may depend on it that he will come.depend on/upon +wh-从句 Whether you can pass the exam depends on how

2、hard you work.That (all) depends./ it all depends. (口语)视情况而定，I may help you. But that/ it depends.2. light 1)n. 光,线,灯 2)v.照亮,点燃-lit(lighted）-lit(lighted）He lit a match. 他划着了一根火柴。 A smile of triumph lit up her face. 她的脸上闪耀着胜利的微笑。 The match lights easily. 这火柴容易划着3)adj .The suitcase is very light.（轻的）T

3、here was a light rain falling. （蒙蒙细雨） heavy rain/rain cats and dogs倾盆大雨He is a light sleeper. 他睡不沉。（易醒的）3. heat v. / heat up 是某物变热或变暖heated adj. 热的激烈的 heated debate, heated discussionheatedly adv.愤怒地激昂地heater加热器发热器 consumer(n.).1 消耗,花费;耗尽She consumed most of her time in reading. 2吃完,喝光The kids soon

4、consumed all the food on the table. 孩子们一会儿功夫便把桌上的食品全部吃光。3 使全神贯注,使着迷+withThe boy was consumed with curiosity. 那男孩充满好奇心。 as one can = as as possiblePlease come here as soon as possible.= Please come here as soon as you can.as many as 多达as long as 长达,只要as far as远至,就而论as well as 和一样好,也,和as early as 早在6.

5、对比：Our food supply has given out.His money soon ran out.We are running out of our time.I have run out of my oil.All his savings have been used up.7.Trap vt. 陷入/ n. 陷阱圈套They finally trapped the mouse in a cage.最后，他们用笼子把老鼠逮着了。The police set a trap for the thieves.She was trapped in the burning house.

6、.from. 远离. stop. (from). 停止. prevent(from). 阻止.You should clean your room to keep it from getting dirty.你应该打扫房间以保持干净。Keep doing 继续keep out 挡住使进不去keep up with 跟上9 What do you think green house gases do你认为温室气体有什么作用呢本句中think后接了一个由what引导的宾语从句。但应注意的是：特殊宾语从句即当一般疑问句主句的谓语动词是 think, believe，suppose，consider,

7、 imagine，guess 和 suggest 等时，表疑问的词要放在主句前即句首。例如：正 Who do you think will win in the game误 Do you think who will win in the game当然一般情况下宾语从句的疑问词应放在主句之后，例如：正 Do you know why we cant cut down the big tree误 Why do you know we cant cut down the big treewhen compared to other natural changes是一个省略的时间状语从句，其完整的形

8、式应该是 When it is compared to; 在时间、地点、条件、方式或让步状语从句中，如果从句和主句为同一主语，或者从句的主语是it,而且从句中的谓语动词时动词be或含有助动词be，可省略主语和be 如：If (it is) so, you must get back and get it. Although (he was) criticized, he still worked hard.He hurt his legs badly when (he was) playing footballcompare to/ with: 与相比Compared to/with many

9、 women, she was indeed very pared to most natural changes与大多数的自然变化相比compare A with B：相比（不同）If you compare her work with his, you will find hers is much pare A to B：把A比作BA teachers work is often compared to a candle.People often compare teachers to gardeners. 人们经常把老师比做园丁。The poet compares his lover t

10、o a rose in his poem.e about:发生=happen(无被动）1 .This situation should never have come out.2 .How did it come about that he had his leg hurt他的腿伤着了，这是怎么发生的3 .This has not come about overnight.冰冻三尺，非一日之寒Take place事件的发生有某种原因或事先的安排：The Olympic Games of 2008 took place in Beijing.Happen 偶然或突发性事件： what happe

11、ned to youI happened to see him on my way home= It happened that I saw him on my way home.Occur 发生或想到，突然想起，意为发生时=happen: what has occurredI occurred to me that she didnt know I had moved into the new house.Come about 事情发生了， 但还不知道为什么。常用于否定和疑问When mother woke up, she didnt know what had come about.Bre

12、ak out 常指战争灾难疾病争吵事件的发生拓展：come into being 形成Come into power/office 当权/当职Come into force/effect 开始生效Come out出版 ,结果 come across偶遇come to 共计， 苏醒When it comes to 涉及Come up with 提出Come up在空中出现，Come along, 进展，跟随come true 成真 is no doubt that . 毫无疑问.There is no doubt that he can come on time.doubt的宾语从句,肯定句wh

13、ether / if / that ；否定句只用that He doubted whether they would be able to help.He never doubted that they would win the game.beyond / without doubt无疑地 13.random 随意的胡乱的随机的 randomly =at random 任意地随便地14. phenomenon (sing.) phenomena (pl.)the phenomena of nature自然现象a social phenomenon 社会现象 vi.Vt.I subscribe

14、 to your opinion completely.(同意赞同)I subscribe to a weekly womens magazine（订阅报纸杂志）She subscribes to a society which helps to protect animals(定期捐款）16Without the green house effect，the earth would be about thirty-three degrees Celsius cooler than it is.如果没有温室效应，地球会比现在冷33这是一个含蓄虚拟条件句 =If there were no “g

15、reen house effect”, the earth would be about thirty-three degrees Celsius cooler than it is.But for electricity (= If there were no electricity)，there would be no modem industry 要是没有电，就不会有现代工业。He was having a meeting with his students；otherwise he would have come. 他当时正与他的学生进行讨论，否则的话他就来帮我们了。 He felt very tired yesterday, or he would have attended the party他昨天很累, 不然他就参加那个聚会了。17. add v. add up 加起来add up to合计