Unit 1 Helping those in need Grammar教学课件(共13张PPT)

(共13张PPT)
Unit 1 Grammar
Helping those in need
Infinitives
Some verbs can have other verbs after them. We
usually use to before the second verb. We call
these second verbs infinitives.
We can use verbs +to + infinitives in sentences.
Three teenagers offered to do some voluntary work during the school holidays.
Cindy wanted to paint a picture of the park near her home.
Work out the rule
An infinitive is the (base/ -ing/ -ed) form of a verb.
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
动词不定式的用法
不定式的构成非常简单：
to do sth (do 代表动词原形)
否定形式是not to do sth
一般表示要干还没干的事（干过的事一般用-ing形式）。
Infinitives
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
Infinitives
We can also use verbs + objects + to + infinitives
in sentences.
Annie taught Tim to sing beautiful songs.
We want them to be happy.
Things to remember
We use infinitives without to after some verbs, such as let
and make.
Mum made me go to bed early.
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.
Betty: Do you (4)_______ me ___________(want/take) some photos of that park for you
Cindy: Yes. That would be very kind of you.
ask
let
go
wants
to stay
want
to paint
to take
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
Infinitives
We can also use to + infinitives to express purpose. （表目的）
Cindy used a brush to paint a picture of a park.
They went to the hospital to help the sick children.
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
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
1. Tell him ___ the window.
to close not B. not to close
C. to not close D. not close
2. I want _____ a teacher when I grow up.
to be B. to C. be D. being
3. My mother told me _____ more water.
drinking B. drank C. to drink D. drink
4. Alice asked me ______ another bag for her.
A. get B. got C. to get D. getting
B
A
C
Exercises
C
Homework
Do some exercises in Book B.