2018年秋九年级英语上册Unit5LookintoScienceLesson25Let’sDoanExperiment同步练习新版冀教版201811082187

Unit 5 Look into Science

●1 correct adj. 正确的；恰当的

[观察] Let's test which theory is correct.

让我们测验一下哪种理论是正确的。

We must make sure that things are done correctly without mistakes.

我们必须确保事情做得准确无误。

[探究] correct的副词形式是________，意为“________”。

[拓展] correct 还可用作动词，意为“改正；纠正”。

Can you help me correct the mistake that you find?

你能帮我改正你发现的错误吗？

1．2016·无锡To my surprise, the 3-year-old boy can spell all those words ________(正确地)．

●2 method n. 方法；办法

[观察] That's called the scientific method.

那被叫作科学方法。

[辨析] method, way与means

It's the best method of working out the maths problem.

这是算出那道数学题最好的方法。

The good way to keep healthy is to take more exercise.

保持健康的好方法就是多锻炼。

His money wasn't earned by honest means.他的钱来路不明。

2．老师正在给我们演示一种新的书写方法。

The teacher is showing us ________ ________ ________ ________ ________．

●3 force n. 力量v. 迫使；强迫

[观察] The force of the air keeps the water in the jar.

空气的力量使水留在广口瓶里。

The truck was forced to stop for repairing. 那辆卡车被迫停下来修理。

[探究] (1)force用作名词时，是________(可数/不可数)名词。

(2)force 还可用作________词，意为“________”，常用于被动结构。force 还可以接动词不定式或形容词、副词、介词短语充当补足语的复合宾语。

3．由于战争，他们被迫离开自己的国家。

They ________ ________ to leave their own country because of the war.

●1 I cover the top with a piece of cardboard and hold it there.

我用一张硬纸板盖住瓶口并抵住它。

[探究] (1)cover在本句中为________动词，意为“覆盖”。cover sth.________ sth.意为“用某物盖住某物”，常用被动形式：sth. be covered with sth.。

(2)a piece of 意为“一片；一块”。a piece of 后面接________名词，表示数量；如果表示的数量超过“一”，则________用复数形式。谓语动词根据piece 的单复数而定。

Mary gave the boy two pieces of cake.

玛丽给了这个男孩两块蛋糕。

[拓展] 表示不可数名词的数量时，要用“数词/冠词＋量词＋of＋不可数名词”结构，如a glass of water一杯水，two bottles of juice两杯果汁。

1．(1)2017·达州________ of the land in that town________ covered with trees and grass.

A．Two fifth; is

B．Two fifth; are

C．Two fifths; is

D．Two fifths; are

(2)2017·南充—Are you thirsty?

—Yes, please give us________．

A．three bottle water

B．three bottle of water

C．three bottles of water

D．three bottles of waters

●2 Then I turn the jar upside down and take my hand off the cardboard. 然后我将广口瓶倒置并将我的手从硬纸板上拿开。

[探究] (1)turn…upside down意为“把……翻转；倒过来”，相当于词组____________。

Turn your book upside down and recite the text.

把你的书翻转过来并背诵那篇课文。

(2)take…off意为“把……从……拿开”。take off还可译为“(飞机)起飞；脱下(衣服)”。

He took his shoes off and sat on the bed.

他脱掉鞋，坐到了床上。

The plane took off an hour late.

飞机起飞晚了一个小时。

2．(1)你不能颠倒事实。

You can't ________ the facts ________ ________．

(2)2017·十堰中国大飞机5月5日在上海浦东国际机场起飞。

The C919________________in Shanghai Pudong International Airport on May 5.

●3 I am so sure of my theory that Brian can do the experiment over your head and I know you won't get wet. 我对我的理论很有把握，布莱恩能在你的头上做实验，而且我知道你不会被淋湿。

[探究] (1)be sure of/about意为“相信……；对……有把握”，表示对某事(物)的看法。其后常接________词、________词或________词。

I am sure of winning the game. 我有把握赢得这次比赛。

(2)本句中that引导的从句用来解释说明句中的名词________。

He told me the news that his uncle would come back soon.

他告诉我他叔叔很快要回来的消息。

[拓展] (1)be sure to do sth.意为“务必做某事；一定要做某事”。

(2)be sur e (that)…意为“肯定……；确定……”，主句的主语必须是人。

3.他不清楚她的名字。

He ________ ________ ________ her name.

●4 It is strong enough to hold the water.

它足够强大，可以将水托住。

[探究] 该结构的基本形式是“形容词/副词＋enough to＋________”，意为“足够……可以……”。

[拓展] “形容词/副词＋enough to”可以和“so…that…”引导的结果状语从句进行同义句转换，如果是否定句，则可以和“too…to…”句式进行同义句转换。

4．(1)2016·丹东他年龄够大了，可以上学了。(翻译句子)

________________________________________________________________________

(2)2016·巴中改编Tina was so careless that she made lots of mistakes in the exam.(改为同义句)

Tina wasn't ________ ____________to make lots of mistakes in the exam.

教师详解详析

【课前自主预习】

单词闯关

1．correct; correctly 2.method 3.force

4．实验；试验 5.广口瓶；罐子

6．上部；上边7.倒出；倾倒

8．科学的； science

9．雨衣10.压力，压强；挤压

11．得出结论，断定，推断出； conclusion

短语互译

1．do an experiment

2．fill…with…

3．cover…with…

4．turn…upside down

5．take…off

6．对……有把握

7．涌出

8. 科学方法

句型在线

1．get wet

2．which theory is correct

3．the scientific method

4．am so sure of; that

5. takes; off

6．strong enough to

7．conclude; stronger than

【课堂互动探究】

词汇点睛

●1 correctly; 正确地

correctly

●2 a new method of writing

●3 不可数；动；迫使，强迫

were forced

句型透视

●1 及物； with; 不可数； piece

(1)C (2)C

●2 turn over

(1)turn; upside down (2)took off

●3 名；代；动名； theory

isn't sure of

●4 动词原形

(1)He is old enough to go to school./He is so old that he can go to school.

(2)careful enough