英语教学课件系列
Go
for
it!
八年级(上)
Section A Grammar Focus
Unit 10
If you go to the party, you’ll
have a good time!
I think I’ll take the bus to the party.
If you do, you’ll be late.

I think I’ll stay at home.
If you do, you’ll be sorry.

What will happen if they have the party today?
If they have it today, half the class won’t come.

Should we ask people to bring food?
If we ask people to bring food, they’ll just bring potato chips and chocolate.
Read the sentences
I will have a good time tomorrow.
I will go to the party tomorrow.
If I go to the party tomorrow, I’ll have a good time.
合并
if引导一个条件状语从句
当主句是一般将来时时, if引导的从句必须用
现在时来表示将来可能发生的动作或存在的状态。
Grammar Focus: if 条件句
在英语里, 当句子的主句为将来时态时, 它所引导的
时间状语从句和条件状语从句都使用一般现在时来
表示将来时间, 这在英语里被称为“主将从现”。
主句的将来时态并不仅限于我们这一课里所学习到
的will＋动词原形构成的一般将来时, 还包括be
going to＋动词原形、be doing所表示的一般将来时
以及我们以后会学到的其它的将来时态。例如:
What is he going to do when he grows up?
他长大了想干什么？
We are leaving for Amoy tomorrow if it doesn’t rain.
如果明天不下雨, 我们就去厦门。
We will buy that microwave next week if its price
keeps going down.
如果价格持续下降, 下个礼拜我们就买那台微波炉。
If +…, I’ll / you’ll +…
↘ ↙ ↘ ↙
条件
结果
For example:
If you study, I’ll be happy.
wear jeans to school , you’ll be sorry.
get up late, you’ll be late.
eat too much, you’ll be fat.
wash your clothes yourself ……
1. Structure
这里if所引导的是真实条件句(real conditional), 即所
假设的条件有可能成为现实, 表达假定所假设的条件
实现时会出现的情况或会采取的行为。有时, 我们
可以使用并列结构的祈使句来表达这种类型的条件句。
e.g. If you set your alarm clock, you won’t oversleep.
如果你上闹钟, 你就不会睡过头了。
Set your alarm clock, and you won’t oversleep.
If you give him an inch, he will take a mile.
他会得寸进尺。
Give him an inch, and he will take a mile.
If you don’t give him some food, he will starve.
如果你不给他一点吃的, 他就会饿死。
Give him some food, or/else he will starve.
(1)条件状语从句通常由连词if引导, 意为“如果、假如”,
主句不能用be going to表示将来, 而应该用shall、will。e.g. If you leave now, you are never going to regret it.
(错误) If you leave now, you will never regret it. (正确)
(2) if “如果”, 引导条件状语从句, 主句用一般将来时，
从句则用一般现在时，如：　If it rains tomorrow, I shan’t climb the hills.
2. 用法
注意: 宾语从句中的if与条件状语从句if的区别。
宾语从句中的if “是否”相当于whether, 引导
宾语从句, 时态需根据语境确定。I don't know if it will rain tomorrow.
我不知道明天是否会下雨。
在阅读英文文章时, 我们有可能看到这样的句子：
If my father will give me permission, I shall spend a few
months abroad.
如果我父亲同意, 我将在国外待几个月。
If you will take the trouble to read his letter carefully,
you will see what he means.
如果你肯花一些时间来认真读他的信，你就会明白
他是什么意思了。
在if-分句中中用“will＋动词原形”并不单纯表示将来意义，
这里的will是个表示“意愿”的情态动词, 相当于be willing to
(愿意)。
要注意这种带“will＋动词原形”的if-分句在某些场合
是不可以随便用的, 比如我们可以说：
If he gets my letter in time, he’ll be able to change
his plans.
如果他及时收到我的信, 他就能改变他的计划。
却不可以说成：
If he will get my letter in time, he’ll be able to
change his plans.
另外, 在if-分句中还可能使用“would＋动词原形”的结构，
这种用法还是表示“意愿”, 常用于表示客气的请求, 这时
主句动词既可以用will/ shall＋动词原形, 也可以用would/
should/ could/ might＋动词原形。如：
If you would try Italian food, you would like it.
如果你愿意尝尝意大利食物, 你会喜欢它的。
If you would reserve the seats, we would be sure of a
comfortable journey.
如果你愿意订座, 我们将肯定会有一个舒适的旅程。
1.如果你不赶快走, 你就会迟到。
2 .如果你爱你的父母, 你应当帮他们做做家务。

3. 如果你更友善一些, 你会教上很多好朋友。
Exercise
If you don’t go soon, you’ll be late.
You should help do the housework if you love your parents.
You will make lots of friends if you are more
friendly.
4.如果你带外校的朋友来, 老师会让他们离开。

5. 如果你不完成作业, 妈妈不会让你玩电游。

6. 当你看到Bill Gates, 你会对他说些什么？
If you bring friends from other schools, the
teacher will ask them to leave.
If you don’t finish your homework, your mother
won’t let you play computer games.
What will you say to Bill Gates when you see him?
For more exercises, click here.
1. be＋doing形式: 用现在进行时态表达将来，
主要意义是表示按计划、安排即将发生的动作，
常用于位置转移的动词, 如go、come、leave，
start、arrive等, 也可用于其它动态动词。如：
The president is coming to the UN this week.
总统这周将到联合国来。
We are moving to a different hotel the day
after tomorrow. 我们后天将换一家宾馆。
Explanation
在现在英语中, 有相当多的动态动词都可以用
现在进行时表示将来。例如：
Dinner is ready. We’re having fish for dinner.
晚饭好了, 今晚我们吃鱼。
I’m spending my holidays in Singapore this year.
今年我要去新加坡度假。
Tom isn’t finishing his high school until next year.
汤姆明年才高中毕业。
advice意为“劝告；建议”是不可数名词，不能说
a advice, 而是a piece of advice,也因为advice是不可
数名词。“两个（则）建议”，我们通常说
two pieces of advice。注意piece要采用复数，
advice不可数，但piece可数。我们也可以说为
some pieces of advice一些建议。
如：Can you give me some advice?
你能给我一些建议吗？
2. Can you give me some advice please?
与advice有关的一些词组：

ask advice of 向...征求意见, 请教
by sb.'s advice 依某人劝告
on sb.'s advice 依某人劝告
follow sb.'s advice 接受某人意见
give advice 劝告, 忠告
Dear Su Mei,
I don’t ______ (know) what to ______ (do) about going to Mike’s birthday party tomorrow night. My parents ______(think) I should study for my English exam next week.
If I______(go) to the party, they ________(be) upset. Mike ______(tell) us wear nice clothes, but I don’t ______(have)
any. If I_____(wear) jeans, I ________(look) the worst. Also, I’m not sure how to ____(go) to the party. If I ______(walk),
it _________ (take) me too long. If I _____ (take) a taxi, it _________ (be) too expensive. Can you give me some advice
please?
3a Fill in the blanks with the correct forms of the verbs in brackets.
know
do
think
go
will be
tells
have
wear
will look
go
walk
will take
take
will be
3b Complete the sentences using your own ideas.
1.If I get up late tomorrow,
____________________________
2.If I don’t finish my homework,
____________________________
3.If I don’t get enough exercise,
____________________________
4.I will not have enough time to study if
____________________________
5.I will not make any friends if
____________________________
I will miss the school bus
my teacher will be angry
I won’t be strong
I play computer games all the day.
I always make them upset.
Exercise
Complete the sentence. Use the phrases
from the box.
1. Don’t talk in class. If you do, the teacher
__________________.
2. Don’t watch TV tonight. If you do, you
__________________________.
will be late, will laugh at you,
will never stop talking,
won’t study for your test,
will tell you to stop
will tell you to stop
won’t study for your test
4. Don’t walk too slowly. If you do, you
________________.
5. Don’t wear jeans to dance. If you do, people
____________________.
6. Don’t ask about her children. If you do, she
_______________________.
will laugh at you
will never stop talking
will be late
1. What ___________ (happen), if we climb the tree.
2. Could you help me ________ (organize) the
party games?
3. If it _____ (rain) tomorrow. We __________
(not go) hiking.
4. If you wear jeans to the party, the teachers
_______ (be) angry.
5. Don’t ________ (bring) food to school.
6. We are going to _______ (ride) bikes to
school.
2. 用所给词的正确形式填空。
will happen
organize
rains
won’t go
will be
bring
ride
Because if it won’t rain, my little son will come, too. ④
I’ll go to the party. And I think if I will give you a ②
Dear Jenny,
Thanks for inviting me to the party. Of course ①
present, you are happy. I hope it won’t rain that day. ③
If he comes, you aren’t disappointed, he is really funny.⑤
OK, see you on the party.
Yours,

will be
doesn’t
give
won’t be
Rose
3. 阅读下面短文把文中出现的语法错误改正过来。
1.Write five sentences with if structure.
2.Copy the sentences on PPT3 and
translate them.
Homework
Thank You!