资源简介

(共19张PPT)
新人教八年级上册
Unit 8 Let’s
Communicate!
Grammar Focus
思想一致
At the end of this part, you will be able to
identify and state the basic structure of “if-clauses” .
Learning objectives
correctly match if-clauses with main clauses and create new sentences.
use if-clauses to express ideas in “communication/ planning” situations.
Lead-in
Read and complete the sentences from the text in Section A.
If you _______ ___ _______ the problem, a face-to-face talk usually _______ the best.
Texting can _______ things worse if you ___ ______ ________ with your words.
If the rehearsal _____ at 7:00 p.m., I’ll ____ ____ ___ at 7:15 p.m.
If you _____ calm and ____ sorry, it will ______.
If I _____ there, I will _____ all the delicious local food.
want to solve
works
make
are not careful
ends
pick you up
stay
say
help
go
try
Presentation
3a Read the sentences.
If you want to solve the problem, a face-to-face talk usually works the best.
Texting can make things worse if you’re not careful with your words.
If the rehearsal ends at 7:00 p.m., I’ll pick you up at 7:15 p.m.
If you stay calm and say sorry, it will help.
If I go there, I will try all the delicious local food.
if引导的
条件状语从句
Find more sentences with if-clauses in Section A.
If you can’t meet, just call you friend.
If it is still hard to talk, take a break.
If you can come, I’ll be very happy.
If you want to make some new friends, this is a good chance.
If you talk to ..., I think he/she will be happy to help you.
如果我去了那里，我会品尝所有美味的当地食物。
If I go there, I’ll try all the deliciouslocal food.
从句+
主句
if引导的条件状语从句
定义：条件状语从句表示主句动作发生的前提、条件、假想和推测等。
意义：if 引导的条件状语从句表示主句发生的条件,表示假如从句动作发生,主句动作就会发生。
Summary
3.句子构成
If you don’t hurry up, you’ll be late.
0
if引导的条件状语从句
主句
=You’ll be late if you don’t hurry up.
0
if引导的条件状语从句
主句
注意：if引导的条件状语从句可以放在主句之前，用逗号隔开；
也可以置于主句之后。
主句 从句时态
当主句用一般将 来时时 If he comes, he will bring his violin.
如果他来, 他会带来他的小提琴。
当主句的谓语中含 有can、may、must 等情态动词时 If you want to lose weight, you must eat less meat.
如果你想减肥, 你必须少吃肉。
当主句为祈使句时 If you are not strong enough, please don’t take part in such
an activity.
如果你不够强壮, 请不要参加这样的活动。
4.if条件状语从句遵循“主将从现”原则
If you study hard, you will pass the exam easily.
=_______ _____, _____ you will pass the exam easily.
5.关于if条件状语从句的句型转换
If there is no water, fish will die.
= Fish will die ________ water.
借助“祈使句+and/or+陈述句(一般将来时)”这一句型来
转换。
借助without 或with来转换。
and
Study hard
without
Practise
3b Match the two parts to make sentences.
1. If we can have a face-to-face
meeting,
2. If I have good news,
3. If you need to leave,
4. If you can finish your work
early today,
5. If the old man has difficulties
in hearing,
6. If you can’t reach him by phone,
A. try texting.
B. I think we’ll understand
each other better.
C. you can write things
down for him.
D. I’ll call you right away.
E. I’ll call a taxi for you.
F. will you join me for
dinner
马上
在……有困难
3c Fill in the blanks with the correct forms of the verbs in brackets.
go
will see
drop
will give
start
will perform
Give
let
think
给我写信
Then discuss what the situations are and whom the information
is for.
Way of communication:
_______________________
a letter or a note
For:
_______________________
_______________________
old classmates or friends
Then discuss what the situations are and whom the information
is for.
Way of communication:
_______________________
a voice text message
For:
_______________________
teammates
Production
Write a short voice text message with your teammates.
If you and your friends want to have a birthday party for your best friend Lily, what preparations should you do
Write a voice text message to your friends
to discuss about them. Try to
use the adverbial clauses
introduced by “if ”.
If we want to prepare a birthday party, we can think about:
We can use the useful expressions:
time
location
guests
food and drinks
activities
Hey, it’s me.
I want to talk to you about ...
It’s time to ...
If we want to ..., we can ...
How / What about ...
Talk to you soon!
Sample writing
Hey, it’s me. I wanted to talk to you about Lily’s birthday party next week. It’s time to make a plan for the party. If we want to find a quiet place, the Moon restaurant is a good choice. We can invite Mr Smith to come if we want to make Lily surprised. How about preparing some potato chips and juice Friends will be happy if we serve them the delicious food. What’s your idea Talk to you soon!
Go to bed early, or you’ll feel sleepy the next morning.(改为同义句)
____ ____ ____ go to bed early, you’ll feel sleepy the next
morning.
Without your help, I won’t work out the problem.(改为同义句) ____ you _______ help me, I won’t workout the problem.
I can finish the work on time. He’ll help me. (用if合并为一句)
______ he ______ me, I _____ _____ the work on time.
We can’t finish the work if you don’t help us.(改为同义句)
We can’t finish the work ________ you _____ us.
一、完成句子。
If you don’t
If don’t
If helps can finish
unless help
如果你加入剪纸俱乐部，我们会免费为你提供工具。
We ______ _______ you with tools for free if _____ ____ the
Paper Cutting Club.
如果天晴，我喜欢在河里游泳。
If ___ ___ sunny, I ____ ____ swim in the river.
我不知道她下个月是否会来，如果她来，请让我知道。
I don’t know if she _____ _____ next month. If she ______,
please let me know.
如果你想和Jenny交朋友，约她逛街是个不错的选择。
If you ______ __ make friends with Jenny, inviting her to
hang out ____ a good choice.
二、根据汉语意思补全句子(每空一词)。
will provide you join
it is like to
will come comes
want to
is
if引导的宾语从句
if引导的条件状语从句
动名词作主语
新人教八年级上册
Thank you!

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