資源簡介

(共20張PPT)
Section A 3a—3c
Unit 8
Let's Communicate!
Learning Objectives
1.通過觀察語法表格，總結歸納if引導的條件狀語從句的結構。
2.通過練習靈活運用if引導的條件狀語從句。
Do you know if
零條件句：用于表達客觀規律、科學事實或必然結果。
結構：If+一般現在時（從句），（主句是）一般現在時（或祈使句）。
例：If you heat ice, it melts. 冰加熱會融化
從句
主句
It will be sunny tomorrow.
Let’s have a trip
tomorrow.
If it ____ sunny tomorrow, let’s ______ a trip.
Let’s ______ a trip if it_____sunny tomorrow.
is
have
have
is
第一條件句：
結構：If + 一般現在時，主句 為一般將來時/情態動詞（如can 、may、might、should等+動詞原形）。
如果你努力學習，你就會取得好成績。
例：If you study hard, you will get good grades.
從句
主句
It is going to rain tomorrow.
I will stay at home.
If it _____ tomorrow, I _____ _____ at home.
I _____ _____ at home if it _____ tomorrow.
rains
will
stay
will
stay
rains
She must be late.
If she _____ to school, she _____ ___late.
She _____ ___late If she _____ to school.
She is going to
walk to school.
walks
must
be
must
be
walks
如果明天下雨，我就不去遠足。
If it ______(rain) tomorrow,I __________(not go) hiking.
=I _________(not go) hiking,if it ______(rain) tomorrow
如果你努力學習，你就能通過這次考試。
You can pass the exam, if you ________(study) hard.
rains
won’t go
won’t go
rains
study
拓 展
第一條件句通常可與以下句型相互轉換：
祈使句+and/or+一般將來時的句子。
如果你動作快，就不會上課遲到。
If you are quick, you won’t be late for class.
=Be quick, and you won’t be late for class.
含有介詞with或without的句子。
如果沒有水，我們無法生存。
If there is no water, we can’t live.
=We can’t live without water.
3a. Look at the form and sum up the structure.
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.
1.找出每個句子的主句和從句 ？
2.主句？從句？
觀察
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
3b. Match the two parts to make sentences.
B
D
E
F
C
A
3c. 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.
... If things ________ (go) well, we ________ (see) all those old faces again. Just think how great it will be! If you think you can come, ________ (drop) me a line and I ________ (give) you all the details about the reunion. But promise me you’ll think about it seriously.
go
will see
drop
will give
Hey, it’s me. I wanted to talk to you about the training plan for our team. The new season is coming, so it’s time to make a plan for our training. If we ________ (start) earlier this year, I think we __________ (perform) better. _______(give) me a call and __________ (let) me know if you __________ (think) of a good time for everyone to meet. Talk to you soon!
start
will perform
Give
let
think
3c. 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.
Language points
have difficulties in doing sth 做某事有困難
right away 立刻；馬上
=at once
write down 寫下
drop sb a line 給某人寫信
make a plan 制定計劃
Summary
零條件句：If + 一般現在時，主句 + 一般現在時（或祈使句）
第一條件句：If + 一般現在時，主句 + will + 動詞原形（或情態動詞 /can/may/should 等）。
if引導的條件狀語從句
零條件句
第一條件句
短語：
Exercise
1. I’ll buy a computer if I _____ (have) enough money.
2. If he _____ (go) to the party, he _______ (have) a great time.
have
goes
will have
3. You ___________ (not get) nervous if you _____ (do ) enough exercise.
4. If she ________ (finish ) work early, she ______ (go) home.
do
won’t get
finishes
will go
If it is sunny this weekend, I _____________________.
If it is sunny this weekend, I _________________________.
won’t stay at home
won’t watch television
Thank you for listening!

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