modals
past of can
could
The animals we eat ________ ( must/ give) food.
must be given
Choose the option
His arteries could be / have been blocked by bad fat.
have been
mention five modal verbs
can- could- would- should- must- have to- ought to-
Fast food _______ ____ _________ (should/ ban) from schools.
should be banned
Active to passive
Vegetables ______ _____ __________ ( should/ not/boil) for more than 10 minutes
shouldn´t have been boiled
can or could express...
permission, offers and requests
Active to passive
Restaurants should offer healthy choices.
Healthy choices should be offered by restaurants.
is it correct?
You shouldn´t have been eating that hamburger.
No, it isn´t.
should express
advice
choose the best option...
Heart problems can be caused / causing by eating too much salt.
caused
All was improved, last night _____ _____ ______ better ________ (could/ plan), don´t you think?
should have been better planned
Must is used to express...
necessity or obligation
Active to passive
They should make unhealthy snacks more expensive so people don´t buy them.
Unhealthy snacks should be more expensive so people don´t buy them
Passive sentence with: wheat bread
correct if a passive modal past is used accurately