牛津深圳版八年级英语上Module 4 School life Unit 7 Memory Grammar课件 （19张PPT无素材）

(共19张PPT)
UNIT7 GRAMMAR
Lucy will visit Guangzhou.
...
If Lucy is interested in places of interest,
I will take her to the Canton Tower.
If Lucy is interested in delicious food，
I will advise her to taste the char siu.
If Lucy is interested in places of interest,
I will take her to the Canton Tower.
the simple present tense
the simple future tense
if引导的从句用一般现在时
主句用将来时
主将从现
01 主将从现
A possible action可能发生的动作
A possible result可能发生的结果
I was away from school today. I don’t know what homework I should do.
If _______________________, they will tell you what homework you should do.
I sometimes forget what things to buy at the supermarket.
If _______________________, you will remember what things to buy.
I don’t know what this word means.
If _______________________, you will find out its meaning.
I hate getting up! I always feel tired in the morning.
If _______________________, you won’t feel tired.
Some students are asking for advice for their problems. Discuss their problems in pairs and give your suggestions.
you telephone your friends
you make a shopping list
you look it up in dictionary
you sleep early last night
If you put salt into water, it disappears.
the simple present tense
the simple present tense
if意为如果，谈论可能发生的行为-一般现在时
主句谈论的结果必定发生-一般现在时
如果谈论的是客观真理→主从句都用一般现在时
02 客观真理
A1 Read these if-clause and draw lines to match them with the results.
What happens if you take a fish out of water
It dies.
Are you sure
Of course, I’m sure. If you take a fish out of water, it dies.
What happens if _______________
It __________.
Are you sure
Of course, I’m sure. If _________________, it _______.
A2 In pairs, make conversations about the sentences in A1 on page 103. Follow the example.
Fill in the blanks with correct forms of the given words.
1. We ________ at home if it rains tomorrow. (stay)
2. Oil ________ if you put it on water. (float)
3. If I have enough money, I ________a car.(buy)
4. Your memory________ better if you live a healthy life.(work)
5. If you stick a needle into a baloon, it ______. (burst)
will stay
floats
will buy
bursts
a possible result
a certain result
a possible result
a certain result
will work
a possible result
03 if...not 和unless的转化
If you do not get enough sleep every night, you will not remember things well.
Unless you get enough sleep every night,
If … not ＝unless
B1 Draw lines to match the beginnings of the sentences in Column A with the endings in Column B.
B2 Rewrite the following sentences with unless.
Unless you brush your teeth every day, you will get a toothache.
Unless the waiter comes soon, I will leave this restaurant./
I will leave this restaurant unless the waiter comes soon.
Unless you open the window, this room will get very hot./
This room will get very hot unless you open the window.
Unless you close that window, flies will get in./
Flies will get in unless you close that window.
条件状语从句
用法
if引导的
条件状语从句
if … not/unless
引导的条件状语从句
表示可能/肯定发生的结果，放主句前后均可
①If it rains tomorrow, we will stay at home.
如果明天下雨，我们将待在家里。
②Flowers dies if you don’t water them for a long time.如果你很久不浇花，他们会死。
①主将从现：将来可能出现的情况；if引导的从句用一般现在时，表示结果的主句用一般将来时
②主现从现：客观真理；主句从句都用一般现在时；if可以用when来替代
引出某件事发生/成立所必需的条件：“除非…否则…”
unless引导的从句用一般现在时，主句用一般将来时（主将从现）
Exercise
1. -I’m afraid we can’t work out the math problem ____ the teacher helps us.
-That’s true. It’s too difficult.
A. if B. unless C. because D. as soon as
2. If you take this train, you ____ in Shanghai in five hours.
A. arrive B. will arrive C. arrived D. have arrived
3. She says that she’ll have to close the restaurant ____ business improves.
A. if B. after C. unless D. when
4. -I wonder if we _____ a birthday party next week.
-If we ____ it, I will call you.
A. will have; have B. have; will have C. will have; will have
5. -Tim, our foreign teacher Mr Green will go back to England next week.
-Really Let’s have a party to say goodbye to her ____ she is free this weekend.
A. unless B. if C.but D. though
B
B
C
A
B
Our Activities
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Jenna Smith
(8 years old)
John Smith
(7 years old)
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