四年级上册英语课件- A day in a recreation Unit4 Grammar 香港牛津版 （共29张PPT）

(共29张PPT)
A day at a children’s palace
4A Unit 4 Grammar
Modals: 'can' and 'must'
We use ‘can/cannot’ to talk about things we may or may not do.
When do we use 'can/cannot'
Examples:
You can borrow books in the library.
You cannot buy a dictionary in a restaurant.
We use ‘must/must not’ to talk about rules.
When do we use 'must/must not'
You must not play on the road. It is dangerous.
Examples:
You must keep quiet in the library.
Quiz time!
Are you ready
We ________ litter in the park.
must not
Trainers only
You _____ wear trainers on the badminton court.
must
You ____ wear this pair of shoes.
can
You ________ feed the birds.
must not
You _____ turn off your mobile phone.
must
You ________ smoke.
must not
We (cannot / must not) buy books in this bookshop.
We (cannot / must not) cheat in an exam.
'Let’s ...' and 'Shall we ... '
When do we use ‘Let’s …’ and ‘Shall we … ’
We use ‘Let’s …’ and ‘Shall we … ’ to make suggestions.
Example:
Let’s go swimming.
Let’s play basketball.
Example:
Let’s go to the park.
Example:
Shall we have a drink
Example:
Shall we watch a film
Example:
Quiz time!
Good idea!
_____ have spaghetti for dinner.
Let’s
________ go to the zoo
Shall we
______ go to the beach this Sunday.
Let’s
________meet in the restaurant
Shall we
See you!