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揪着往事
上传于：2024-07-17
Unit5 知识总结
Lesson 25Let’s Do an Experiment
一 重点句子以及重点知识点
Let’s do an experiment.
对应知识点：
experiment 名词--实验；
do an experiment in... 做...方面的实验
I fill a jar with water.
对应知识点：
fill...with..用..充满
be filled with..=be full of..充满，装满
I cover the top with a piece of cardboard and hold it there.
对应知识点：
cover 名词--封面；盖子
动词--覆盖 be covered with...被..覆盖
a piece of 一片；一块
Then I turn the jar upside down and take my hand off the cardboard.
对应知识点：
turn 动词--转动；转身
相关短语：turn up 调高 turn down 调低 turn...over 使..翻转
turn on 打开 turn off 关闭 turn around 转身
turn...upside down 使..翻转 take 过去式-took 过去分词-taken
相关短语：
take off 脱掉；起飞 take...off...把...拿走 take up 占用；开始从事
take out 拿出；取出 take in 吸收 take place 发生 take care of 照顾 take over 接管 take it easy 放轻松
You think the water will pour out.
对应知识点：
pour 动词--倒出 pour out 倒出；涌出 pour ...into... 把..倒进..
That’s called the scientific method.
对应知识点：
method 名词--方法 a method of doing sth 做某事的方法
I am so sure of my theory that Brain can do the experiment over your head and I know you won’t get wet.
对应知识点:
sure 形容词 当然的
be sure of ...确定某物... be sure to do sth 确定做某事
be sure that.... 确定....
Eg: You may be sure of his honesty.
You may be sure that he is honest.
拓展：make sure of/make sure to do sth /make sure that+从句 “弄清楚..”
Eg: Make sure to lock the door before you go out.
over 在..之上，不接触（垂直正上方） The force of the air keeps the water in the jar.
对应知识点：
force 不可数名词--力量；
动词--强迫：force sb to do sth =force sb into doing sth 强迫某人做某事
It is strong enough to hold the water.
对应知识点：
形容词+enough to do sth 足够怎样做某事
We have discovered that the air pressure helps the cardboard hold the water in the jar.
对应知识点：
discover 动词--发现；指的是发现已经存在的事物。
invent 动词-发明；发明未存在的事物。
（2）the air pressure 气压
Lesson 26 Keep the Candle Burning
一 重点句子以及重点知识点
a lighter or matches.
对应知识点：
match 名词--火柴；比赛 复数--matches.
match 动词--匹配； match ..with ..与..相匹配
Eg: Our school will have a basketball match this Sunday.
The green scarf doesn’t match my red coat.
Light the candle. 对应知识点：
light 名词--灯光；光线； 动词--点燃：light up 点燃
形容词--浅的；轻的 lighter 打火机
When the candle stops burning,it has used up all the oxygen in the air.
对应知识点：
stop 名词--车站； 动词--停止
动词时用法：stop doing sth 停止做某事 stop to do sth 停下来去做某事 stop sb from doing sth 阻止某人做某事
use 动词--使用； useful 形容词--有用的； useless 形容词-无用的
use 时用法：be used to do sth被用来做某事
be used to doing sth 习惯于做某事 used to do sth 过去常常做某事
use up =run out of 用光
up 相关短语：
eat up 吃光 drink up 喝光 give up 放弃 take up 开始从事；占据
put up 张贴；挂起 stay up 熬夜 pick up 捡起；顺道接某人
light up 点燃
The water inside the jar rises.
对应知识点:
rise 动词-上升；升起 过去式--过去分词-rose-risen
Because about one fifth of the air is made up of oxygen,the water rises and fills about one fifth of the jar. 对应知识点：
one fifth 五分之一
分数表达法：
分子用基数词表示，分母用序数词表示；当分子大于1时，分母加s.
如: one third 三分之一 two thirds 三分之二
注意：
分数做主语时，谓语动词的单复数由分数后的名词决定。如果名词是复数，谓语动词用复数形式；如果名词是单数名词或者不可数名词，谓语动词用单数形式。
Eg：About two fifths of the students in Kaili go to school by bus.
be made up of 由..组成 ，表示由多种成分，团体，成员或者单位组成，强调整体的构成或组成。
Eg: This country is made up of 50 states.
Lesson 27 Planet Danny
一 重点句子以及重点知识点
Do you know any planets in the solar system?
对应知识点：
the solar system 太阳系
What would you like to look at with a telescope?
对应知识点：
would like 想要
would like + 名词 “想要某物” would like to do sth = feel like doing sth =want to do sth 想要做某事
听力容易出现：
Would you like+名词？ 肯定回答：Yes,please. 否定回答：No,thanks.
Would you like to do...? 肯定回答：I’d like to. 否定回答：I’d like to,but.
I can see only a tiny circle of light.
对应知识点：
a tiny circle of light 小光圈
You’re looking through the wrong end.
对应知识点：
end 名词--最后部分/方面/末端 动词--结束
I told my father that we were studying the solar system.
对应知识点：
that 引导宾语从句。
在含宾语从句的主从复合句中，主从句的时态遵循下列原则：
若主句是一般现在时，从句根据需要选择时态。
若主句是一般过去时，从句也应用过去的某种时态。
若宾语从句表示的是客观事实或普遍真理，不管主句时态，从句用一般现在时。
The stars come out at night.
对应知识点：
come out 出来；（书）出版；（花）开放 come 相关短语：
come in 进来 come on 加油；过来 come up with 提出；想出
come over 顺便来访 come back 回来
I don’t think you can find one unless you have a bigger telescope.
对应知识点：
unless 除非；如果不 --引导条件状语从句，谓语动词遵循“主将从现”原则。
拓展：unless 引导的条件状语从句常与if ...not...进行同义句 的转换。
Eg：You will fail unless you work hard.=If you don’t work hard, you will fail.
Actually,double the size of your house.
对应知识点：
actually=in fact 事实上
double 形容词--两倍的；名词-两倍；动词-加倍；副词-双重地。
Well,it’s worth a try,even if I don’t find a planet.
对应知识点：
worth 形容词--有价值的；名词-价值
be worth doing sth 值得做某事
even if 即使=even though 引导让步状语从句
Lesson 28 The Study of Living Things
一 重点句子以及重点知识点
Would you like to be a biologist when you grow up? 对应知识点：
biology 名词--生物学；biologist 名词--生物学家
grow up 长大；成长
What mysteries of nature do you know about?
对应知识点：
nature 名词-大自然； natural 形容词-大自然的
Fantastic facts about the butterfly have been drawing Dr.Taylor’s attention.
对应知识点：
attention 名词--注意；留心
pay attention to ... 注意... draw one’s attention 引起...的注意
Eg:You should pay attention to your spelling.
In Mexico, the butterflies always return to the same small pieces of forest which is only 20 kilometres wide.
对应知识点:
(1)20 kilometres wide---基数词+单位词+形容词
形容词--名词：long--length 长的--长度；high--height 高的--高度；
wide--width 宽的--宽度
Here ,as many as 230 million butterflies spend the winter.
对应知识点：
as many as 修饰可数名词复数-多达；和...一样=as much as修饰不可数名词 But in Mexico,people cut down the trees that the butterflies need to rest on because they want more land for farming.
对应知识点：
cut down 砍伐；砍倒
cut in 插队；cut off 切断 ；cut up 切碎
Eg:She is cutting back a rose bush.
We were cut off in the middle of our conversation.
He cut up the meat on the plate.
This worries Dr.Taylor a lot.
对应知识点：
worry 名词/动词--担心； worry about 担心；担忧
This is both puzzling and interesting for many scientists.
对应知识点：
both...and...两者都...注意：做主语，谓语动词用原形。
neither..nor... 既不..也不... ； either...or...或者..或者...；
not only...but also...不但...而且...
注意：做主语，讲究就近原则。
Eg: Neither he nor I am a student.
Lesson 29 DNA--The Story of You
一 重点句子以及重点知识点
What can scientists do with DNA?
对应知识点： what..do with..?=How...deal with..? 如何...处理...？
In general, a blueprint is a drawing that shows how to put a house together with many different parts