《Let's Do an Experiment》Look into Science! PPT教學(xué)課件
第一部分內(nèi)容:課前自主預(yù)習(xí)
單詞闖關(guān)
1. 正確的;恰當(dāng)?shù)腳_______→(adv.)________
2.方法;辦法________
3.力量;迫使;強(qiáng)迫________
4.experiment ________
5.jar__________
6.upside __________
7.pour__________
8.scientific________→(n.)________
9.raincoat ________
10.pressure _______________
11.conclude _______________ →(n.) __________
句型在線
1. 我想地面會(huì)被弄濕。
I think the floor will ________ ________.
2.讓我們測(cè)驗(yàn)一下哪種理論是正確的。
Let's test ________ ________ ________ ________.
3.那被叫作科學(xué)方法。
That's called ________ ________ ________.
4.我對(duì)我的理論很有把握,布萊恩能在你的頭上做實(shí)驗(yàn),而且我知道你不會(huì)被淋濕。
I _______ _______ _______ _______ my theory _______
Brian can do the experiment over your head and I know you won't get wet.
5. 布萊恩把他的手從硬紙板上拿開。
Brian ________ his hand ________ the cardboard.
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Let's Do an ExperimentPPT,第二部分內(nèi)容:課堂互動(dòng)探究
詞匯點(diǎn)睛
1 correct adj. 正確的;恰當(dāng)?shù)?/p>
[觀察] Let's test which theory is correct.
讓我們測(cè)驗(yàn)一下哪種理論是正確的。
We must make sure that things are done correctly without mistakes.
我們必須確保事情做得準(zhǔn)確無誤。
[探究] correct的副詞形式是________,意為“________”。
[拓展] correct 還可用作動(dòng)詞,意為“改正;糾正”。
Can you help me correct the mistake that you find?
你能幫我改正你發(fā)現(xiàn)的錯(cuò)誤嗎?
2 method n. 方法;辦法
[觀察] That's called the scientific method.
那被叫作科學(xué)方法。
It's the best method of working out the maths problem.
這是算出那道數(shù)學(xué)題最好的方法。
The good way to keep healthy is to take more exercise.
保持健康的好方法就是多鍛煉。
His money wasn't earned by honest means.他的錢來路不明。
3 force n. 力量 v. 迫使;強(qiáng)迫
[觀察] The force of the air keeps the water in the jar.
空氣的力量使水留在廣口瓶里。
The truck was forced to stop for repairing.
那輛卡車被迫停下來修理。
[探究](1)force用作名詞時(shí),是________(可數(shù)/不可數(shù))名詞。
(2)force 還可用作________詞,意為“________”,常用于被動(dòng)結(jié)構(gòu)。force 還可以接動(dòng)詞不定式或形容詞、副詞、介詞短語充當(dāng)補(bǔ)足語的復(fù)合賓語。
句型透視
1 I cover the top with a piece of cardboard and hold it there.
我用一張硬紙板蓋住瓶口并抵住它。
[探究] (1)cover在本句中為________動(dòng)詞,意為“覆蓋”。cover sth.________ sth.意為“用某物蓋住某物”,常用被動(dòng)形式:sth. be covered with sth.。
(2)a piece of 意為“一片;一塊”。a piece of 后面接________名詞,表示數(shù)量;如果表示的數(shù)量超過“一”,則________用復(fù)數(shù)形式。謂語動(dòng)詞根據(jù)piece 的單復(fù)數(shù)而定。
Mary gave the boy two pieces of cake.
瑪麗給了這個(gè)男孩兩塊蛋糕。
[拓展]表示不可數(shù)名詞的數(shù)量時(shí),要用“數(shù)詞/冠詞+量詞+of+不可數(shù)名詞”結(jié)構(gòu),如a glass of water一杯水,two bottles of juice兩杯果汁。
2 Then I turn the jar upside down and take my hand off the cardboard. 然后我將廣口瓶倒置并將我的手從硬紙板上拿開。
[探究] (1)turn…upside down意為“把……翻轉(zhuǎn);倒過來”,相當(dāng)于詞組____________。
Turn your book upside down and recite the text.
把你的書翻轉(zhuǎn)過來并背誦那篇課文。
(2)take…off意為“把……從……拿開”。take off還可譯為“(飛機(jī))起飛;脫下(衣服)”。
He took his shoes off and sat on the bed.
他脫掉鞋,坐到了床上。
The plane took off an hour late.
飛機(jī)起飛晚了一個(gè)小時(shí)。
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