This document discusses the forms and uses of the modal verbs can and could. Can is used to express ability in the present, possibility in the present, and to ask for favors or permission. Could expresses ability in the past and possibility in the past. It is also used to politely ask for something in the present. Examples are provided to illustrate the forms and uses of can and could.

1. CAN - COULD Form

2. UsesBeatriz Solana

3. CAN - COULDHe can playthedrumsCan I gototheconcert?Paul couldn’tswimwhen he wasfourDO YOUREMEMBERTHEFORM / USE OF MODAL VERBS?

4. CAN - COULDREMEMBER:- Modal verbs are followedbyanINFINITIVEI can playthe guitar- Weuse NOTtomakethemnegativeShecouldn’t (couldnot) runveryfasttwoyearsago- We use subject – verbinversion in theinterrogativeCouldyouhelp me with my homework?

5. We use CAN toexpressabilityMark can swimverywellCAN

6. CANWealso use CAN toexpresspossibilityYou can failyourdriving test

7. CANWealso use CAN toaskfor a favourorpermissionCan Mary havedinnerwithus ? No, shecan’tCan youpass me thesalt? Yes, I can

8. COULDCOULDisusedtoexpressability in thepast.I couldn’t drive when I wassixteen

9. Wealso use COULDtoexpresspossibility in thepastShecouldbetiredCOULD

10. Itisusedtoaskforsomething in thepresent in a politewayCouldyouhelpcarrythis heavy box?Use