资源简介

(共18张PPT)
Unit 8 Let's Communicate!
Section A How do we communicate
Grammar Focus 3a-3c
教学目标
。
1
Lead-in
If you miss the train I’m on,
You will know that I am gone.
从句用一般现在时
if 条件状语从句
主句用一般将来时
2
Presentation
Read the sentences. Find more sentences with if-clauses in Section A.
3a
Find the similarities(相似性) of these 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 条件句
if 引导的是从句,剩下部分为主句
客观事实、真理、习惯性动作；几乎一定会发生
结构：If+现在时，主句也是现在时（主现从现）
例：If you （mix） red and blue, you （get）purple.
如果混合红色和蓝色，就会得到紫色。
例：If water （freeze）, it （become）ice.
（水结冰时会变成冰。—— 科学事实）
She （get）angry if you （lie）to her.
（如果你对她撒谎，她会生气。—— 习惯性反应）
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.
mix
get
freezes
becomes
gets
lie
主句：
一般现在时
从句：
一般现在时
zero conditional sentence
零条件句
Pay attention to the tense（时态） in these sentences and find out the rules
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.
first conditional sentence
第一条件句
可能发生
结构：If +现在时，主句将来时（主将从现）
If it (rain) tomorrow, we (stay) at home.
如果明天下雨，我们就待在家里。
If you (study) hard, you (pass) the exam.
（如果你努力学习，就会通过考试。—— 可能的结果）
He (come) if you (invite) him.
（如果你邀请他，他可能会来。—— 用情态动词表可能性）
rains
will stay
study
will pass
will come
invite
主句
一般现在时
从句
一般将来时
Pay attention to the tense（时态） in these sentences and find out the rules
2
Presentation
Read the sentences. Find more sentences with if-clauses in Section A.
3a
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的条件句
位置 例句
1b, 1c 1. We’ll finish at 7:00 p.m. if it’s on time.
2. If everything goes well, I’ll see you at 7:15.
3. If the traffic is too bad, you’ll have to wait for a few minutes.
4. If I visit China this year, I will go to the park with you.
5. If you can make it, I’ll show you around the city and let you taste all the yummy local food.
6. When will the rehearsal end if it’s on time
7. What will the man do if he visits China this year
If的条件句
位置 例句
1d 1. If you come to my city, I’ll show you around.
2. If I go there, I’ll try all the delicious local food.
2a and 2d 1. If you want to solve the problem, a face-to-face talk usually works the best.
2. If you can’t meet, just call your friend.
3. Some of you may prefer texting, but it takes longer and can make things worse if you’re not careful with your words.
If的条件句
位置 例句
2a and 2d 4. If you stay calm and say sorry, it will help.
5. If it is still hard to talk, take a break.
2e 1. If you can come, I’ll be very happy.
2. If you want to make some new friends, this is a good chance.
3. If you need help, I think you should tell …
4. If you talk to …, I think he / she will be happy to help you.
5. If you go there, you’ll …
6. If you join me, we can …
3
Practice
Match the two parts to make sentences.
3b
1. If we can have a face-to-face meeting, A. try texting.
2. If I have good news, B. I think we’ll understand each other better.
3. If you need to leave, C. you can write things down for him.
4. If you can finish your work early today, D. I’ll call you right away.
5. If the old man has difficulties in hearing, E. I’ll call a taxi for you.
6. If you can’t reach him by phone, F. will you join me for dinner
/ mi t / n. 会面；会议
right away
立即；马上
have difficulties in doing
做某事有困难
Fill in the blanks with the correct forms of the verbs in brackets. Then discuss what the situations are and whom the information is for.
3c
go
will see
drop
will give
line /la n/ n. 字行；便条；线
drop sb a line 给……写信
detail / di te l/ n. 细节；详情
reunion / ri ju ni n/
n. 团聚；重逢；聚会
seriously / s ri sli/
adv. 严肃地；认真地
Fill in the blanks with the correct forms of the verbs in brackets. Then discuss what the situations are and whom the information is for.
3c
start
will perform
Give
let
think
training / tre n /
n.训练；培训
4
Production
Rules
1. Use “if” at the beginning of the sentence.
2.Each new sentence must begin with the last sentence.
Sentence Chain: play a game in groups
Summary
New words
meeting; line; detail; reunion; seriously; training
零条件句和第一条件句（ Zero and first conditionals）
Grammar
零条件句
1. 结构：If + 一般现在时，主句 + 一般现在时（或祈使句）。
2. 特点：表达永恒真理、科学事实或反复发生的习惯，结果必然发生。
3. 时态：主从句均用一般现在时，强调 “必然结果”。
Expressions
right away; drop sb a line
Homework
Summarize the rules and usage of zero and first conditionals.
It will be checked in the next class.

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