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1、Lesson 27 Danny the “Dry-o-saur”!examineLead inTheyre examining homework.mudliquidsolidThey are solids.spooncornstarchpoursaltNew wordsPresentation1.examine v. 檢查檢查2.discover v. 發(fā)現(xiàn)；發(fā)覺發(fā)現(xiàn)；發(fā)覺3.conclusion n. 結(jié)論結(jié)論4.explain v. 解釋解釋5.enough adj. 足夠的；充分的足夠的；充分的6.weird adj. 奇異的奇異的7.mud n. 泥泥8.liquid n. 液體液體9

2、.solid n. 固體固體10.spoon n.匙匙11.cornstarch n. 玉米淀粉玉米淀粉12.spoonful n.一匙的量一匙的量13.mix v. 混合；調(diào)配混合；調(diào)配14.pourv. 倒；灌；流出倒；灌；流出15.dissolve v. 溶解；溶化溶解；溶化16.salt n.食鹽食鹽17.press v. n.壓壓 ；擠；印刷機(jī)；新聞界；擠；印刷機(jī)；新聞界First, putintoThen, coverwithNext, holdaboveAt last, turnupside down, and takeoffLets review the experiment.

3、I guess so.Are you ready, Danny?Lets see whose theory is right.Brian takes away his hand. Brian is right! What conclusion can we get? The air pushes up on the cardboard.Conclusion:The force is strong enough to hold the water.Another experiment: Weird MudspooncornstarchmixRead the experiment in your

4、book and fill in the blanks.Some things _ in water, but not cornstarch. Itonly _ with water. When you close your hand and _, some of the water _ out. The mud becomes _. When you open your hand, the water mixes in again. It becomes a _.dissolvemixespressgetssolidliquid1. The force is strong enough to

5、 hold the water.氣壓足夠強(qiáng)能把瓶子里的水托住。氣壓足夠強(qiáng)能把瓶子里的水托住。 1)enough to do sth. “足夠足夠做某事做某事” 。 例如：例如： The boy is old enough to go to school. 2)enough修飾形容詞或副詞時(shí)，放在所修飾的詞后。修飾形容詞或副詞時(shí)，放在所修飾的詞后。 例如：例如：Im strong enough to carry the box.3)enough修飾名詞時(shí)，可放在名詞前或名詞后。例如：修飾名詞時(shí)，可放在名詞前或名詞后。例如：He doesnt have enough money to go for

6、 travelling.Language Points2. Air is stronger than I thought！ 空氣比我想像的有力！空氣比我想像的有力！1)句中有句中有than，用比較級(jí)。，用比較級(jí)。 例如：例如：He is taller than me. 他比我高。他比我高。 Picking apples is better than having classes. 摘蘋果比上課好。（摘蘋果比上課好。（than后用動(dòng)詞后用動(dòng)詞-ing形式）形式）2) would rather than. 寧愿寧愿不愿不愿 ；與其；與其，不，不如如 。 than后面加動(dòng)詞原形。后面加動(dòng)詞原形。例如

7、：例如： I would rather stay at home than go out. 我寧愿待在家里，也不出去。我寧愿待在家里，也不出去。3. Put eight spoonfuls of cornstarch into the bowl. 把八勺玉米淀粉放到碗里。把八勺玉米淀粉放到碗里。 spoonful，可數(shù)名詞，表示，可數(shù)名詞，表示“一勺的量一勺的量”。 -ful是后綴，可構(gòu)成形容詞是后綴，可構(gòu)成形容詞，如，如careful, painful, hopeful, thankful, useful, helpful等。等。 也可以構(gòu)成名詞，表也可以構(gòu)成名詞，表“某一容器的量某一容器的

8、量” “滿滿” 。 例如：例如： a spoonful of sugar 滿滿的一匙糖滿滿的一匙糖 two cupfuls of milk 兩滿杯牛奶兩滿杯牛奶 4. What is happening ? 發(fā)生了什么？發(fā)生了什么？1) happen to sb. （事情）發(fā)生在某人身上（事情）發(fā)生在某人身上 What happened to that little girl? 那個(gè)小女孩怎么了？那個(gè)小女孩怎么了？2) happen to do sth. 碰巧碰巧/偶爾做某事偶爾做某事 I happened to meet my old friends in the street yester

9、day. 昨天我在街上邂逅了我的老朋友們。昨天我在街上邂逅了我的老朋友們。注：注：happen to sb. 中的中的“to”為介詞，表方向；為介詞，表方向； happen to do sth. 中的中的“to”是動(dòng)詞不定式符號(hào)。是動(dòng)詞不定式符號(hào)。根據(jù)句意及漢語提示寫出單詞根據(jù)句意及漢語提示寫出單詞1. The _ (令人吃驚的令人吃驚的) story surprised me. 2. We have _ (發(fā)現(xiàn)發(fā)現(xiàn)) that it can hold the water in. 3. There is a bird _ _ _ (在在頂部頂部) the tree. 4. Jake is _ _ (夠高夠高) to reach the peach.5. _ _ (別的什么別的什么) can you do? surprisingdiscoveredon top oftall enoughWhat elsePracticeHomework 寫作：奇異的泥是不是很奇特呢？回家自己也寫作：奇異的泥是不是很奇特呢？回家自己也體驗(yàn)一回吧。把你的實(shí)驗(yàn)過程描述一下，看看和書體驗(yàn)一回吧。把你的實(shí)驗(yàn)過程描述一下，看看和書上的有什么不同，上的有什么不同，70詞左右。詞左右。A miss is as good as a mile.失之毫厘，差之千里。