8AUnit 7 Seasons Grammar：Conditional sentences 课件+嵌入音视频(共23张PPT)

(共23张PPT)
Conditional sentences (2)
8A Unit 7
Grammar
Review
Karel will visit Shenzhen.
...
What is Karel interested in
If Karel is interested in sightseeing,
I will take him to the Red Bridge Park.
If Karel is interested in delicious food，
I will advise him to taste the roasted pigeon.
Review
If Karel is interested in sightseeing, I will take him to the Red Bridge Park.
a possible action
We have learnt to use conditional sentences to talk about possible results.
a possible result
If Karel is interested in sightseeing
If Karel is interested in sightseeing, I will take him to the Red Bridge Park.
Review
the simple present tense
the simple future tense
if Karel is interested in sightseeing.
I will take him to the Red Bridge Park
What about a certain result
a possible
result
Let’s learn
It disappears.
If you put some salt into water, what happens to it
- What happens if you drop a glass
- It breaks.
- Are you sure
- Of course, I’m sure. If you drop a glass,it breaks.
- What happens if you water a plant
- It grows.
- Are you sure
- Of course, I’m sure. If you water a plant, it grows.
Let’s learn
a possible action
a certain result
Let’s learn
If you put salt into water, it ____________.
If you drop a glass, it ____________.
If you water a plant, it ____________.
disappears
breaks
grows
let’s discover
When we use a conditional sentence to talk about something that will certainly happen, both verbs should be in (the simple present tense / the simple future tense).
Things to remember
We can also put the if-clause after the main clause.
if you put it into water.
If you put salt into water, it disappears.
Salt disappears
Let’s learn
Practice
1. If you take a fish out of water,
2. If you switch off the lamp,
3. If you put wood into water,
4. If you heat water to 100℃,
5. If you cool water to 0℃,
B. it dies.
A. it boils.
C. the room becomes dark.
D. it turns into ice.
E. it floats.
Let’s practise
Draw lines to match the if-clauses with the results.
Practice
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
Let’s watch
What will happen to Ron if he doesn’t hurry up
Let’s learn
What will happen to Ron if he doesn’t hurry up
Ron will miss the bus if he doesn’t hurry up.
Ron will miss the bus unless he hurries up.
Ron will miss the bus unless he hurries up.
Unless Ron gets up, he’ll be late.
The word unless means if...not.
Ron will miss the bus if he doesn’t hurry up.
If Ron doesn’t get up, he’ll be late.
Let’s learn
,
Ron will miss the bus unless he hurries up.
Unless Ron hurries up he will miss the bus.
Let’s learn
,
The places of unless
Draw lines to match the sentences.
We will have a picnic tomorrow
I will finish the book today
Unless you want to watch something,
I am going to buy a dress for my mother
Unless you practice playing the
piano every day,
you will not play it well.
if it does not rain.
I will switch the television off now.
unless I can think of a better
idea for a present.
unless I feel tired.
Practice
2. If you don’t eat a good breakfast, your brain will not work better.
3. If you don’t work hard, you will not succeed.
1. If you don’t get enough sleep every night, you will not remember things well.
Rewrite the following sentences with unless.
= Unless you get enough sleep every night, you will not remember things well.
= You will not remember things well unless you get enough sleep every night.
= Unless you eat a good breakfast, your brain will not work better.
= Your brain will not work better unless you eat a good breakfast.
= Unless you work hard, you will not succeed.
= You will not succeed unless you work hard.
Practice
Are you sure you can use conditional sentences in our daily life
Let’s complete the sentences between mum and Ron in the following situations.
1
2
Practice & use
3
______________ your coat,
you will catch a cold.
(put on)
The meat will go bad ________________ in the fridge. (put)
You won’t see clearly _____________ your glasses. (wear)
If you don’t put on
1
Practice & use
___________________________________ your coat,
you will catch a cold.
(put on)
/ Unless you put on
/unless you put
Practice & use
2
The meat will go bad _______________
____________ it in the fridge. (put)
if you don’t put
if you don’t wear
Practice & use
/unless you wear
3
You won’t see clearly _______________________________ your glasses. (wear)
Sum up
If you put salt into water,
it disappears. (a certain result)
确定的结果
unless = if … not
You will miss the bus if you don’t hurry up.
You will miss the bus unless you hurry up.
Conditional sentences
Both verbs should be in the simple present tense with a certain result
Homework
Homework
1. Finish the exercises on Page 105.
2. Use conditional sentences to talk about possible actions and its results in your daily life.
Thank you for listening