Unit 1 Period 3 Helping those in need 教学课件（共有PPT18张）

(共18张PPT)
Period 3
Grammar
（1）基本形式：
to+动词原形 （在某些情况下可以不带 to）
（2）特点 ：
A .没有人称和数的变化
C . 有时态和语态的变化
（被动语态的形式为 to be + 动词过去分词）
B . 可以有自己的宾语和状语
Grammar动词不定式
A、作主语
To learn a foreign language is not easy .
It is good others.
帮助他人是件好事。
It is exciting the Internet.
上网是件令人兴奋的事。
to help
to surf
= It’s not easy to learn a foreign language.
动词不定式用法
www.xkb1.com
B、作表语
The important thing is to finish the work
on time .
What you have to do now is
(打扫教室)
to clean the classroom
动词不定式
C 作宾语
动词 + to do
常见动词有 choose , hope , offer , want , decide,
learn , plan, wish, agree, fail等
1. He decided (buy) the camera.
to buy
2. I want (listen to) some music after class.
to listen to
3. I hope (travel) all over the world one day.
to travel
动词不定式
2) 动词+疑问词 + to do
I don’t know what to do .
how to do it / that.
(去哪里)
(什么时候出发)
(选择哪个)
Where to go
When to leave
Which one to choose
动词不定式
3) 动词 + it(形式宾语）+宾补 +to do
I find it important to learn English
我发现很难和他好好相处.
我发现在炎热的夏天很容易入睡
I find it hard to get on well with him .
I find it easy to fall asleep in hot summer.
动词不定式
1) 动词 + 宾语 +to do
Li Mei asked me to show her the new dictionary .
注：有以上结构的常用动词有 tell. wish, ask, want
like, beg, invite,warn, allow,encourage,advise 等。
2) 动词 + 宾语 + do
(不带 to 的不定式)
注：常用的动词是:感官动词see, hear, feel,
watch, notice； 使役动词 have ,make, let.
动词不定式做宾补
E、作状语
可以表目的、表结果、表原因
F、作定语（必须后置）
I came here
( 告诉你一个好消息)
to tell you a good news
We have a lot of homework to do every day.
I have a good news to tell you.
我们每天有很多作业要做.
我有个好消息要告诉你.
动词不定式
not + to do
Mr.Smith asked the boy ___________(not play) this kind of game.
not to play
Please tell her __________(not do) so much housework.
not to do
动词不定式的否定形式
Presentation
Infinitives
We often use to + infinitive after these verbs:
choose hope offer want decide learn plan wish
Things to remember
We can use question words + to + infinitives after decide,
know, learn and remember.
Do you know how to help disabled children
Presentation
A1 Mark and his mother visited Vivien. Mark is telling his friends about the plete his words with the correct forms of the verbs in brackets.
We (1) ________________(decide/ meet) Vivien today. We (2)_____________(want/help) her in some way. When we arrived, Vivien was very happy. She(3)_____________(begin/talk) to me about her school. She said, “I (4)__________(like/ go) to school, but I don’t have any friends. I feel lonely.”
Mum gave her some advice. Then Mum asked me to give Vivien her present, but I (5)_____________(forget/bring) it! Vivien said, “It’s OK. I (6)___________ (hope/see) you again soon.”
decided to meet
wanted to help
began to talk
like to go
forgot to bring
hope to see
Presentation
B.Betty is visiting Cindy in the plete their conversation with the correct forms of the verbs in brackets.
Betty: Morning, Cindy. We’re organizing a painting competition for the children in hospital. We’ll (1)_____ them ________(ask/paint) pictures. Would you like to take part in the competition
Cindy: Yes, I’d love to. I want to paint a picture of the park near my home, but the doctor won’t (2)___ me ___(let/go) out. He (3)____ me _______(want/stay) in hospital.
ask
let
go
wants
to stay
to paint
Presentation
Betty: Do you (4)_______ me ________(want/take) some photos of that park for you
Cindy: Yes. That would be very kind of you.
Betty: I’ll go there this weekend. Then I’ll bring the photos to you next week and (5)___________ you ___________(teach/paint).
Cindy: Thanks for your help.
teach
to paint
want
to take
Presentation
C.Use the information in the reports on page 3 to answer these questions. Use the correct infinitives in your answers.
Why did the three teenagers offer to do some
voluntary work during the school holidays
They offered to do some voluntary work _______
children in need.
Why did Betty go to the children’s hospital
She went to the hospital ___________ a painting competition for the children there.
Why did Betty go to the park near Cindy’s home
She went there ________ some photos.
to help
to take
to organize
Presentation
4 Why did Mark and his mother teach Vivien to tell stories
They taught Vivien to tell stories ___________ her express her feelings.
Why did Annie teach disabled children to sing
She taught them to sing ___________ them joy and peace.
to help
to bring
Practice
用所给单词的适当形式填空。
1.Our teachers always make us _______(study).
2.She would like you _________(come) to her home.
3. They want ________(go)shopping.
4. The policeman asked us ______________(not play) in the street.
5.She plans_________(visit) her aunt.
study
to come
to go
not to play
to visit
Practice


填空。
1. I am ________(plan)_________(help) the poor children.
2. I am thinking about _______(play) football with my friends.
to help
planning
playing