初中英语牛津译林版九年级上册Grammar教学ppt课件

设计说明

首先通过复习Reading来导入新课，用课文中的if和unless句型来引出本单元的语法，即if和unless 的用法。通过一系列的讲解和练习，让学生掌握if和unless引导的条件状语从句的用法，尤其要强调从句的时态，学会用这两个连词来构成语句，表达自己的想法。

教学目标

通过本课时的教学，让学生达成以下目标：

1.知识目标

掌握单词和短语：attack, polar bear, male, studio, minibus。

2.能力目标

（1）掌握连词if和unless引导的条件状语从句；

（2）学会用条件状语从句来表达思想，培养写作能力。

3.情感目标

培养学生懂得亲近大自然，爱护动物。

重点难点

重点：生词和短语；if和unless引导的条件状语从句。

难点：if和unless 引导的条件状语从句。

教学准备

PPT 课件；相关图片。

授课时数

1课时

教学过程

Step 1  Lead-in

1. Revise Reading and talk about the four TV programmes.

2. Think it over.

If you are a football fan, you _____________.

If you enjoy solving mysteries, you ____________.

If you are an animal-lover, you ______________.

If you send text messages to 1396 while watching Beijing Music Awards, you ______________.

Any answer is possible.

Step 2  Grammar A  

1. Show them the sentences with if. Explain the usage of if and the clause, especially the tense.  

2. Have a free talk. In this way, the students can practice in pairs.

A: What will you do if you have a lot of money?

B: If I have a lot of money, I will …

3. Do A1. Choose the right tense. Read and understand the sentences.

1 If I _________ (go, will go) to the Reading Club this afternoon, I ________

(do not have, may not have) any time to watch TV.

2 If Simon __________ (gets, will get) home too late, he ________ (misses, will miss) his favourite cartoon.

3 If Amy _________ (completes, will complete) all her homework quickly,  she ___________ (watches, will watch) the chat show.

4 If Daniel ________ (takes, will take) part in the game show, he _________  (wins, might win) a prize.

5 If Sandy _______ (finds, will find) a programme interesting, she _______ (introduces, will introduce) it to us.

Answers: 1 go; may not have  2 gets; will miss  3 completes; will watch

4 takes; might win  5 finds; will introduce

4. Do A2. Fill in the blanks and practice the dialogue in pairs. Give them some additional explanation, especially some new words and phrases.

Dad: What will a bear do if it’s in danger?

Millie: If a bear (1) ________, it (2) _______ people.

Dad: What will a polar bear do if it’s hungry?

Millie: If a polar bear (3) ________, it (4) ________ fish from the water.

Dad: What will elephants do if they’re thirsty?

Millie: If elephants (5) ________, they (6) ________ until they find a river.

Dad: What will tigers do if they live in the wild?

Millie: Tigers (7) ________ for their own food if they (8) _______.

Dad: What will tigers do if they have babies?

Millie: Tigers (9) ________ as a family if they (10) _________.

Dad: What will male wolves do if there’s danger?

Millie: Male wolves (11) ________ their families if there (12) ________.

Answers:（1）is in danger （2）will attack（3）is hungry（4）will catch

（5）are thirsty（6）will walk（7）will hunt（8）live in the wild

（9）will live（10）have babies（11）will protect（12）is danger

5. Sum up the rules and stress the tense of the if-clause.

                if引导的条件状语从句 

（1）if引导的条件状语从句用于表示假设的情况可能发生，其中if是“如果”的意思。

（2）用法：(注意时态搭配)

Step 3  Grammar B

1. Show the sentence “She will listen to music if she doesn’t have housework to do.” and change it into the sentence“She will listen to music unless she has housework to do.”

（1）We can use unless to say that something can only happen or be true in a particular situation. Sometimes we can use if ... not to replace unless.

The situation will continue unless humans stop hunting them for their fur and bones.

→ The situation will continue if humans do not stop hunting them for their fur and bones.

Unless it rains tomorrow, we are going to play football in the park.

→If it does not rain tomorrow, we are going to play football in the park.

（2）The unless-clause can come first or after the main clause.

Unless you try your best, you will not realize your dream.

You will be late unless you leave right now.

2. Do the exercise on P86. Match the two parts of the sentences. Read the sentences and stress the key points.

1 Unless the weather report says it is going to rain,

2 We will arrive at the studio around 9:30 a.m.

3 Unless you already know the studio very well,

4 You will buy your lunch at the restaurants in the studio

5 Unless you are tired,

6 You will have a chance to see how a TV programme is recorded

a unless you take your own food with you.

b you will not need to take the minibus in the studio.

c you will not have to take an umbrella with you.

d unless the traffic is very heavy.

e unless you have little interest in it.

f you will travel around it with a tour guide.

Answers:1c  2d  3f  4a  5b  6e

3. Work out the rule and stress the tense.

unless 引导的条件状语从句

unless引导条件状语从句，意为 “除非……，如果……不”。

（1）unless从句可以放在句首，也可位于主句之后。

（2）unless 可以与if…not 互换。

（3）时态搭配同 if 引导的条件状语从句。

Step 4  Language points

…unless you have little interest in it. ……除非你对它几乎没有兴趣。

have interest in sth./doing sth. 意为“对……有兴趣”，相当于show (an) interest in sth.或be interested in sth.。

He had much interest in playing the piano when he was very young.

=He became /was much interested in playing the piano when he was very young.

=He showed a great interest in playing the piano when he was very young.

他很小的时候就对弹钢琴感兴趣。

Step 5  Homework

1. Revise Grammar and finish the exercises.

2. Preview Integrated skills. Preview the words and read through the notes.

当堂达标

I. 单项选择。

1. If he 　　　　 hard, he will get good grades.

A. study     B. studies      C. will study      D. studied

2. I want to know if Mary 　　　　 to the party tomorrow.

A. go       B. went       C. will go      D. goes

3. If he comes late, 　　　　 he will miss the train.

A. and         B. so         C. /             D. or

4. Mary will go to Sanya if she 　　　　 a five-day trip.

A. have     B. had         C. will have       D. has

II. 根据汉语意思完成句子。

1. 如果Max没准时来，我们就先走不等他了。

If Max ___________ on time, we ____________ without him.

=We __________ without him __________ Max comes on time.

2. 如果没有你的帮助，我将不能完成这份工作。

I ____________ the work if you don’t help me.

=I won’t finish this work ___________ you help me.

答案：I.1—4 BCCD

II.1. doesn’t come, will leave ; will leave, unless  2. won’t finish; unless 

板书设计

教学反思