初中英语Grammar教学ppt课件

设计说明

首先通过一些课文原句的复习导入本课时语法—— 形容词的比较级和最高级。通过Betty和May的一些对比让学生们大体了解形容词的比较级，之后通过三个书包的一些对比让学生对形容词的最高级有初步的认识。然后讲解形容词比较级和最高级的构成，并通过对应练习检验所学的语法知识。最后让学生通过学习几个固定句式进一步掌握形容词比较级和最高级的用法。

教学目标

通过本单元的教学，让学生达成以下目标：

1.知识目标

掌握词汇：worse, worst, height, weight, sec., competition, test, swimmer。

2.能力目标

(1)掌握形容词比较级和最高级的构成。

(2)学会正确使用形容词比较级和最高级。

3.情感目标

让学生感受语言的趣味性，学习更多比较级、最高级的用法。

重点难点

重点：形容词比较级和最高级的构成

难点：形容词比较级和最高级的用法

教学准备

PPT课件

授课时数

1课时

教学过程

Step 1  Lead-in

Ask the students to review some sentences and find out all the adjectives in different forms.

1. The biggest one in Fifth Street! (七年级下册U1)

2. The bathroom is the best place to chat and watch TV. (七年级下册U1)

3. The Sun is about 1,300,000 times larger than the Earth. (七年级下册U5)

4. She looked down and saw her body became smaller and smaller. (七年级下册U6)

5. My dog is the cleverest animal of all. (七年级下册U8)

6. My best friend is Max. He is the tallest boy in our class—almost 1.75 metres. (八年级上册U1)

7. She is shorter than I am. (八年级上册U1)

Let the students try to define comparative and superlative adjectives

Step 2  Presentation

1. Let the students try to compare May and Betty.

May is shorter than Betty. =Betty is taller than May.

May’s eyes are bigger than Betty’s. =Betty’s eyes are smaller than May’s.

May’s hair is longer than Betty’s. =Betty’s hair is shorter than May’s.

2. Ask the students to conclude the rules.

Ask the students to read these sentences and try to find the rules about comparative.

We use“comparatives + than”to compare two people or things.

A+形容词的比较级+than + B

当我们将两个人或事物进行比较时，我们要用形容词的比较级，表示 “较……，更……一些，比……更……”。

3. Ask students to compare the three bags.

￥50.00　　　　　　  ￥100.00　　　　　　　 　￥150.00

The first bag is nice.

The second bag is ____________ the first one.

The third bag is ____________of all/the three.

The third bag is nicer than ____________________ /___________________.

The first bag is big.

The second bag is _____________ the first one.

The third bag is _______________of all/the three.

The first bag is expensive.

The second bag is _________________ the first one.

The third bag is ____________________ of all/the three.

Answers: nicer than; the nicest; the other (two) bags; any other bag；

bigger than; the biggest；more expensive than; the most expensive

4. Ask the students to read these sentences and conclude the rules of superlative adjectives.

We use“the + superlatives” to compare three or more people or things.

... the+形容词的最高级 +of/in ...

当我们将三个或三个以上的人或事物进行比较时，我们要用形容词的最高级，表示 “最……”, 最高级前通常要加the。

5. Ask the students to change the adjectives into their comparatives and superlatives and find the rules of the forms.

Step 3  Practice

1. Ask students to help Daniel complete the following table with the correct adjectives.

Answers:

2. Daniel has made a profile of his classmates. Read the profile and complete his notes.

1 Simon is    taller than    (tall) Sandy.

2 Peter is ____________ (tall) of the six students.

3 Sandy is _______________ (heavy) Millie.

4 Peter is ______________ (heavy) of the six students.

5 Among the six students, Millie is ____________ (slow) swimmer.

6 Amy is _____________ (fast) swimmer of the six students.

7 Millie’s drawing is ______________________ (beautiful) Peter’s.

8 Sandy’s drawing is ____________________ (beautiful) in her class.

9 Millie’s English is ______________ (good) Simon’s. Millie’s English is _____________ (good) in her class.

Answers: 2 the tallest  3 heavier than  4 the heaviest

5 the slowest  6 the fastest  7 more beautiful than 

8 the most beautiful  9 better than; the best

Step 4  More structures of comparative adjectives.

Introduce when we can use comparatives and more structures of comparative adjectives.

1.通常情况下，我们用“比较级 + than...”来引出比较的第二部分。

The picture is more beautiful than that one. 这幅画比那幅更漂亮。

为避免重复，在than后常用that, those等词来替代前面提到过的名词。

2.我们用“Which ...+比较级, ... or ...”来表示在两者中选择。

Which is bigger, the sun or the moon? 太阳和月亮，哪个更大？

3.我们可以在比较级前加上much, even, a little, a lot, far等词语来表示程度。

  Now the air in our hometown is much better than it was before.

现在我们家乡的空气比从前好得多。

4.我们用“比较级+and +比较级”的结构来表示人或事物本身程度的变化 （越来越……）。

His shoes are dirtier and dirtier. 他的鞋子越来越脏。

Clothes are more and more expensive. 衣服越来越贵。

more and more+原级, 只用于以“more”构成比较级的形容词,根据句意也可以用“less”构成降级比较。

5.我们用“ the+比较级... , the+比较级...”的结构来表示一方随另一方变化而变化（越……越……）。

The sooner, the better. 越早越好。

The kinder we are, the luckier we will be. 越善良越幸运。

6.我们用“the + 比较级 + of 两者”的结构来表示“在两者中较……的一个”。

Lily is the shorter of the two girls. 莉莉是这两个女孩中比较矮的一个。

Step 5  More structures of superlative adjectives.

Introduce when we can use superlatives and more structures of superlative adjectives.

1.我们用“the /形容词性物主代词 + 最高级”的结构来表示某人或事物最高程度（最……）。

Peter is his oldest son.彼得是她的长子。

此处最高级前不可用the

2.我们用“the + 最高级 + 比较范围”表示某一范围内“最……”。

in + 表示范围的名词或名词性短语; of/among + 表示范围的人或物

Peter is the oldest son in his family. 彼得是他家中最大的儿子。

Peter is the oldest son of/among the five children. 彼得是五个孩子中最大的一个。

3.我们用“ the +序数词+最高级” 来修饰最高级表示“第几……”。

Millie is the third tallest in her class.米莉是她班里第三高的。 

The Yellow River is the second longest river in China.黄河是中国第二长河。

4.我们用“one of+the+最高级+可数名词复数形式”表示“最……的……之一”。

He is one of my best friends. 他是我最好的朋友之一。

注意：比较级 + than any other +名词单数

      =比较级 + than the other +名词复数 =最高级 + 比较的范围

Spring is the best season of the year.

= Spring is better than any other season of the year.  

= Spring is better than the other seasons of the year.

春季是一年中最好的季节。

Step 6  Homework

1. Review grammar and finish the related exercises.

2. Preview Integrated skills & Study skills on page 13-15.

当堂达标

Ⅰ. 单项选择。

1. My mother is _______ in our family.

A. busiest    B. the busiest    C. busier        D. busy

2. This apple is _______ of all.             

A. redder    B. the redest     C. the reddest    D. reddest

3. Which pen is _______, this one or that one?

A. dear      B. dearest       C. the dearest    D. dearer

4. Kate is ____than all the other girls. She is ____ of all.

A. taller, tallest               B. taller, the tallest

C. the tallest, tallest           D. tallest, the tallest

5. Do you know _______ girl of the three?

A. the youngest               B. youngest

C. the younger                D. younger

Ⅱ. 用所给词的适当形式填空。

1. The earth is __________(big) than the moon. The sun is ______________ (big) of the three.

2. My Heart Will Go On is one of __________________ (popular) songs.

3. Which do you like __________ (well), tea or coffee ?

4. This film is _______________  (exciting) than that one.

5. I believe you will study _______ (hard) than last term.

6. Lily had _______ (many) apples than Lucy. But she had _______ (little) juice than Lucy.

7. It’s ________ (hot) than yesterday.

8. He is ___________ (tall) boy of the two.

Answers：Ⅰ. 1. B　2. C　3. D　4. B　5. A 

Ⅱ. 1. bigger, the biggest  2.the most popular  3.better  4.more exciting  5.harder  6.more, less  7.hotter  8.the taller

板书设计

教学反思