外研版高中英语第一册 (必修1)(精)

外研版高中英语第一册（必修1）Module 5 In a lab Grammar(1)By Huang Guiping from No. 1 Senior High SchoolTeaching Aims:Enabling the students to master the usages of Degrees of Comparison. Teaching content:1) Degrees of comparison.2) Special usages and additional information.Teaching Important and Difficult Points:How to enable the students to master the usages of Degrees of Compariso n. Teaching Methods:1) Inductive methods;2) Pair-work, drill and discussion.Teaching Aids:1) PowerPoint.2) The blackboard.3) Projector.Teaching procedures:Step I Lead-inGreetings: Greet the whole class as usual.Look and Guess:① Two heads are better than one.② More haste, less speed.③ East, west, home is best.④ The best mirror is an old friend.⑤ Least talk, most work.T: Look at these proverbs on the screen and try to find their similarities.S: They are all including degrees of comparison.T: Yes, you’re right. Now please open your textbook on Page 41 and look at Activity1—(7), pay attention to these two sentences, and we have known that b is right, but these two sentences both told us two grammatical rules of degrees of comparison, please bear this in mind and we are going to learn more.StepⅡ. Warming up and consolidationOk, first please look at the information in the chart below, work on your own and complete the sentences. (Show them on the screen)Example: The earth has half as many moons as Mars.1. Jupiter is ______________________________________ than the earth.2. Jupiter is ______________________________________ from the sun than theearth.3. Saturn is ______________________________________ than Mars.4. Mars is _______________________________________ earth.5. Saturn is nearly _________________________________ Jupiter.Suggested answers:1. Jupiter is eleven times larger than the earth.2. Jupiter is five times further from the sun than the earth.3. Saturn is twenty times bigger than Mars. / Saturn is twenty timesthe size of Mars.4. Mars is half as big as earth. / Mars is half the size of earth.5. Saturn is nearly as big as Jupiter.Step Ⅲ. PrinciplesT: Call back the answers from the students.On the basis of the answers, stimulating the students to find the principles in them.Ask several students to give their opinions and at the same time list them on the blackboard.倍数的三种表达法：1）. 倍数+as+形容词原级+as+ 对比成分2）. 倍数+形容词比较级+than+对比成分3）. 倍数+the size (length, width, depth, height) of+对比成分Give more examples to consolidate the rules. (On PowerPoint)1. After the new technique was introduced, the factory produced _______ carsin 1999 as the year before.A. as twice manyB. as many twiceC. twice as manyD. twice many as2. At a rough estimate, Nigeria is _______ Great Britain.A. three times the size asB. the size three times ofC .three times as the size of D. three times the size of3. It is reported that the United States used _________ energy as the wholeof Europe.A. as twiceB. twice muchC. twice much as D .twice as much4. He speaks English well indeed, but of course not ________ a native speaker.A. as fluent asB. more fluent inC. so fluently asD. much fluently than5. Our neighbor has ________ ours.A. as a big house asB. as big a house asC. the same big house asD. a house the same big asSuggested answers:1. C2. D.3. D4. C5. BPay attention to the forth sentence, it contains the following structure: （1）. as + 形容词或副词原级+ as…表示“和…一样”（2）. not as / so + 形容词或副词原级+ as 表示“不如…”Step Ⅳ. Special usages of the Degrees of ComparisonNow let’s look at the sentences on the screen and pay more attention to the underlined part.1. Winter is coming, it’s getting colder and colder.2. The girl becomes more and more beautiful.3. The hot metal is getting bigger and bigger.4. The sun is getting stronger and stronger during the morning.5. The more John worked on the math problem, the more confused he became.6. The more you learn, the more you know.7. The harder you push, the more quickly the cart will move.Suggested answers:The first four sentences tell us this sentence pattern:“比较级 + and +比较级”（两个同义形容词的比较级），表示“越来越…”And last three sentences tell us this sentence pattern:“the + 比较级, the +比较级”表示“越…, 就越…”Multiple choices:1. The number of people present at the concert was _______ than expected.There were many tickets left.A. much smallerB. much moreC. much largerD. many more2. ---How did you find your visit to the museum?--- I thoroughly enjoyed it. It was _______ than I expected.A. far more interestingB. even much interestingC. so more interestingD. a lot much interestingSuggested answers: 1. A 2. AFrom these two sentences we can draw such conclusion: we can use“(a) little, (a) bit, a lot, rather, any, (very) much, far, by far, even, still, almost…” in front of the Degrees of Comparison to modify them.Step Ⅴ.Summary and HomeworkIn this period we have learned the basic grammatical rules of Degrees of Comparison. Please finish the exercises on page 43 ＆ 47 to consolidate them, thank you for listening and see you next time.Teaching Feedback:Grammar has been focused while it also has been disputed by Chinese learners for many years, different people have different opinions. However, as foreign language learners, although English grammar is usually integrated with other language leaning, we still need systemic mastery of it.。