Chapter 6 could_couldn’t … when …语法 课件(共18张PPT)

(共18张PPT)
Primary Longman Elect
4A Chapter 6
could/couldn’t
… when …
Could / Couldn’t
Could / Couldn’t are the past tense forms of can / can’t.
Could = was able to do
Couldn’t (Could not) = was not able to do
Could / Couldn’t
Could / Couldn’t are the past tense forms of can / can’t.
two years ago
Jack could swim two years ago.
Could / Couldn’t
Could / Couldn’t are the past tense forms of can / can’t.
last year
I couldn’t play the violin last year.

When
We use the connective when to link up two sentences.
4 years old
Tom could ride a bike when he was four.
When
We use the connective when to link up two sentences.
7 years old
Jenny could skip when she was seven.
I could ride a bike when I was five.
couldn’t play the piano
The verb after could / couldn’t doesn’t change.
Key structure
Susie could do ballet when she was six.
What could the children do when they were young
do ballet / 6
Susie
Practice
Ben could hop when he was four.
What could the children do when they were young
hop / 4
Ben
Practice
Willy could tidy his toys when he was three.
What could the children do when they were young
tidy his toys / 3
Willy
Practice
Peter and Jill could swim when they were seven.
What could the children do when they were young
swim / 7
Jill
Peter
Practice
Practice
Danny and I could play table tennis when we were eight.
What could the children do when they were young
play table tennis / 8
I
Danny
Reflexive pronouns
Doing something by myself/yourself
= Doing something without other people’s help
Tammy could tie her shoelaces by herself.
Reflexive pronouns
Ken couldn’t get dressed by himself.
Alan
Ken
Doing something by myself/yourself
= Doing something without other people’s help
I could get dressed by myself.
He himself.
She herself.
You yourself/yourselves.
We ourselves.
They themselves.
Key structure
Practice
What could/couldn’t the children do by themselves when they were five
Carmen couldn’t pack her school bag _________ .
You could climb the stairs ____________ .
Connie and Cathy could carry their school bags ____________ .
David couldn’t tie his shoelaces ____________ .
I could do up my buttons _____________ .
Betty and I couldn’t comb our hair __________ .
You and John could get dressed ____________ .
by herself
by yourself/yourselves
by themselves
by himself
by myself
by ourselves
by yourselves
What could/couldn’t you do by yourself when you were young
Tell your friends.
THE END