最新新课本新目标英语八年级上册Unit3教案名师优秀教案.doc
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1、新课本新目标英语八年级上册Unit3教案Unit 3 Im more outgoing than my sister. Section A 1 (1a-2d) 一、教学目标: 1) 能掌握以下单词:outgoing, better, loudly, quietly, hard-working, competition, fantastic, which, clearly, win 能掌握以下句型: ? Tina is taller than Tara. ? Sam has longer hair than Tom. ? She also sings more loudly than Tara.
2、 2) 能掌握以下语法: ? 形容词或副词比较级形式的构成。 ? 表示两者进行比较的句式结构。 3) 能对人物的外表进行描绘,个性进行比较。 二、教学重难点 1. 教学重点: 1) 形容词或副词比较级形式的构成。 2) 表示两者进行比较的句式结构。 2. 教学难点: He has shorter hair than Sam. Is Tom smarter than Tim? She also sings more loudly than Tara. 三、教学过程 ?. Lead-in 1. Ask Ss to write down as many adj. about people as po
3、ssible. Check the adj. Ss write and we can group them into some pairs, like: Section A 1a tall - short; thin - heavy, long hair - short hair, calm - wild Give Ss an example by comparing Old Henry and Santa Claus. e.g. Santa Claus is older than Henry. Henry is taller than Santa Claus. Henry is younge
4、r than Santa Claus. Santa Claus is younger than Henry. ?. Presentation Ask Ss to see the pix about apples and pears to see the differences. Then compare some of their things with each other. e.g. The apples are bigger than the pears. The pears are more delicious than the apples. Summarize the Compar
5、atives. Group competition. A + be(V) + 比较级 + than + B. ?. Game (I and my desk mate) Ask Ss to compare with their partners and find out the differences. e.g. She is heavier than me. I am more outgoing than her. She gets up earlier than me. I run faster than her. ?. Listening Then listen to the record
6、ing. Ask Ss to number the twins. Check the answers. ?. Pair work Point out the sample conversation in activity 1c. Say, now work with a partner. Make your own conversation about the twins. Ask several pairs to say one or more of their conversations. ?. Listening 1. Work on 2a: Point out the two colu
7、mns and read the headings: -er, -ier and more. Then point out the words in the box. Read them. Say, now listen and write the er and ier words in the first column and the words that use more in the second column. Play the recording and check the answers. 2. Work on 2b. Point out the picture and the t
8、wo boxes with the headings Tina is and Tara is. Say, listen to the recording. Write word in the boxes. The words are from the list in activity 2a. Play the recording and check the answers. ?. Pair work 1. Point out the chart in activity 2c. Say, Make your own conversations according to the elative d
9、eviation is less than 0.2%. 4, repeated at least three times, and called for determination of the r- determination of calibration should be parallel 3?points: d solution concentration. In order to improve the accuracy of calibration, calibration should pay attention to the following 1, typically acc
10、ording to the components to be tested to select the height of the size of standar-1 mol L-1-range of 0.01 mol Ltion are determined by calibration of the method. Constant component in the determination of standard solution concentration solu lity of anhydrous Na2CO3, calculate the exact concentration
11、 of the HCl solution. Most accurate concentrations of the standardmaterial until both quantitative response fully, and then consumed in the titration of aqueous solution of HCl volume and qua 1 in dilute solution, and then use the anhydrous Na2CO3 benchmark solution titration accurately weigh the-ol
12、 L1HCl standard solution, first with a certain amount of concentrated HCl diluted with water, mixed concentration is about 0.1m-tion of 0.1mol Ltermine its exact concentration. This determines its exact concentration is called calibration. For example, for the preparaItAAAASA Close to the desired so
13、lution was prepared, and then use the reference material (or another material standard) to de2ent. The quantity conceptstringnt figures; the prepared solution choose what kind of vessel. That accurate, it should be very strict tolerances can be less concentration should be determined on the balance
14、at the level of the weighing; record should be written to several signification loric acid and three volumes of water and mix. Preparation of solution, according to the requirements on the accuracy of soluoriginal concentrated H2SO4 volume 1 volume, mix with 1 volume of water. And as 1:3 HCl, the or
15、iginal volume 1 volume hydroch the and preservation methods of 1:1 (or 1+1), 1:2 (1+2) volume is expressed as concentration. For example, 1:1 solution of H2SO4, are calculated using volumetric flasks, pipettes, burets accurate operation, not sloppy. (B) the general solution preparation ationance, ac
16、curate to four digits after the decimal point. Volume calibration solution, if it were to participate in the concentrcalibration solution, everything is very strict and accurate. Weighing standard substances requires the use of analytical bal ess oflid reagents weigh in the scales, add the solvent (
17、water), graduated cylinder or measuring cup amounts. But in the whole procared from original, generally only accurate to 12 significant figures, it can be graduated cylinders measuring liquids or so1. Of solid acid and alkali solution prep-id and alkali solution, it is usually prepared with about 0.
18、1mol The concentration of Lf the standard solution, first solution was prepared, and then select the base material calibration. Do the titration with acions occumulated error is too large, affect the accuracy of the results. 2. calibration cannot be directly made accurate concentratsolution was prep
19、ared solution, in principle only be diluted once, if necessary, dilute the secondary. Dilution of too many astock tes, where necessary, corrected volume, and considering the effect of temperature. D calibration good of standardOperated by e best is 20mL. C preparation of calibration solutions and us
20、e liquor, such as glassware, such as volumetric flasks and pipete, thnot be too few, weighing at least 0.2G above; same titration at the end consumption of standard solutions or too small in siz in order to reduce measurement error, weighing the baseline amount of substance should? information. Ask
21、pairs to continue on their own. 2. Ss practice their conversations. 3. Ask some pairs to act out their conversations. ?. Role-play 1. Read the conversation first and try to match the people with the right things. a. sang better Nelly b. with shorter hair Lisa c. practice more and really wanted to wi
22、n d. sang more clearly e. danced better 2. Let Ss read the conversations after the teacher. 3. Let Ss practice the conversation. 4. Then let some pairs act out their conversations in front of the class. Homework: Write six sentences: Write about the things that are the same and different between you
23、 and your best friend. 板书设计: Section A (1a-2d) outgoing, better, loudly, quietly, hard-working, competition, fantastic, which, clearly, win 句型: ? Tina is taller than Tara. ? Sam has longer hair than Tom. ? She also sings more loudly than Tara. 教学反思: 3 Section A 2 (Grammar focus-3c) 一、教学目标: 1) 复习巩固形容
24、词的比较形式及对两者进行对比。 2) 进一步总结所学的对两者进行比较的句式结构。 3) 能运用所学的目标语言,进行说与写的活动,完成相关任务。 4)学会与朋友友好相处,培养乐观,积极向上的性格。 二、教学重难点 1. 教学重点: 1) 总结形容词及副词比较级的构成方式。 2) 进一步总结对两者进行比较的句式结构。 2. 教学难点: 1) 总结形容词及副词比较级的构成方式。 2) 能运用所学的目标语言,进行说与写的活动,完成相关任务。 三、教学过程 ?. Warming- up and revision 1. Ask some Ss compare he/she with his/her des
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