Can

We use Can to express Abilities

Musician can play a guitar

Sub. + aux + Vsf

Can roger fly a plane?  No, he can’t fly a plane

Aux + Sub. + Vsf           (-) Sub + aux (-) + Vsf

What can he do?                  He can ride a horse

Qw + aux + Sub. + Vsf           Sub.+ aux + vsf

We also use Can to express opportunities

We can go to Alaska the next vacations.

Sub. + aux + Vsf

I can study in another country.

Sub. + aux + Vsf

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