初中英语人教新目标 (Go for it) 版九年级全册Section B优质课件ppt

设计说明

本课时学习有关薯片的发明的相关对话。教学时通过一系列图片讨论美食的味道来导入新课，然后让学生讨论其他的有这种味道的食品，过渡到1a与1b的活动中。通过不同的任务对听力材料加以处理，让学生多维度地利用听力材料。

教学目标

通过本课时的学习，让学生达成以下目标：

1. 知识目标：

(1)单词：crispy , salty, sour, customer 

(2)短语：by mistake, in the end

(3)句子：①Potato chips were invented by mistake.

②The customer thought the potatoes were not thin enough.

③Finally he put lots of salt on them so they were salty enough.

2. 能力目标：

(1)通过听说训练，了解薯条的发明历史；

(2)学会使用被动语态谈论薯条的发明历史。

3. 情感目标：

通过学习,了解中国的传统文化，培养民族自豪感。

重点难点

1.重点：本课时的重点单词、短语和句型。

2.难点：运用被动语态的相关句型谈论某种美食的发明。

教学准备

PPT课件，1c, 1d的录音

教学过程

Step 1 Lead-in

Show the students some pictures and talk about the four basic kinds of tastes.

How do they taste?

lemon : sour   ice-cream: sweet   coffee: bitter  salt : salty

Get the students to name some food that are associated with the four tastes.

Step 2 Work on 1a—1b

The words in the box describe how food can taste. Write them under the correct pictures. Some pictures have more than one word.

_________         ____________      __________      ___________

_________         ____________      __________      ___________

Answers:

crispy      sour      sweet     salty

salty       fresh      cold     delicious

Write the name of a different food after each word.

Step 3 Listening

1. Look at the picture and guess:

What are they talking about?

Answer: They are talking about potato chips.

2. Listen and circle T for true or F or false.

(1)Potato chips were invented by mistake.    T F

(2)They were invented in 1863.     T F

(3)The customer thought the potatoes were not thin enough.  T F

(4)The customer said they were not salty enough.    T F

(5)George wanted to make the customer happy.    T F

(6)The customer was happy in the end.    T F

Check the answers one by one.

Answers: (1)T  (2)F  (3)T  (4)F  (5)F  (6)T 

3. Listen again and answer the questions.

(1)Who invented potato chips?

(2)When were they invented?

(3)What did the customer order at the restaurant?

(4)What did the customer think of the potato chips George cooked at first?

(5)How did George cook the potatoes then?

Check the answers one by one.

Answers: (1)They were invented by a cook called George Crum.

(2)In 1853.

(3)He ordered a plate of fried potatoes.

(4)He thought they were cut too thick.

(5)He cut the potatoes really, really thin and cooked them for a long time until they were crispy. And he put lots of salt on them so they were really salty.

4. Listen again. Complete the sentences.

The History of Potato Chips

Do you know how potato chips were invented? Potato chips ______ by a cook called George Crum. They were invented in ______.

George Crum cut the potatoes really, really ______ and then cooked them for a long time until they were ______. Finally he put lots of salt on them so they were ______________.

Check the answers one by one.

Answers: were invented; 1853; thin; crispy; really salty 

5. Listen to the tape again and pay attention to passive voice (past tense).

Step 4 Role-play.

1. Read the dialogue aloud for a few minutes by yourself.

2. Role-play in groups.

3. Role-play in front of the class.

Step 5 Homework

1. Preview the new words and expressions.

2. Preview the passage Do You Know When Basketball Was Invented ? on page 46.

板书设计