Coniugazione del verbo inglese
COULD TRILL

Verbo regolare: trill - trilled - trilled

Affermazione

Forma semplice	Forma con V-ing
I could trill you could trill she could trill we could trill you could trill they could trill	I could be trilling you could be trilling she could be trilling we could be trilling you could be trilling they could be trilling
Perfetto	Perfetto con V-ing
I could have trilled you could have trilled she could have trilled we could have trilled you could have trilled they could have trilled	I could have been trilling you could have been trilling she could have been trilling we could have been trilling you could have been trilling they could have been trilling

Negazione

Forma semplice	Forma con V-ing
I couldn't trill you couldn't trill she couldn't trill we couldn't trill you couldn't trill they couldn't trill	I couldn't be trilling you couldn't be trilling she couldn't be trilling we couldn't be trilling you couldn't be trilling they couldn't be trilling
Perfetto	Perfetto con V-ing
I couldn't have trilled you couldn't have trilled she couldn't have trilled we couldn't have trilled you couldn't have trilled they couldn't have trilled	I couldn't have been trilling you couldn't have been trilling she couldn't have been trilling we couldn't have been trilling you couldn't have been trilling they couldn't have been trilling

Forma interrogativa

Forma semplice	Forma con V-ing
could I trill? could you trill? could she trill? could we trill? could you trill? could they trill?	could I be trilling? could you be trilling? could she be trilling? could we be trilling? could you be trilling? could they be trilling?
Perfetto	Perfetto con V-ing
could I have trilled? could you have trilled? could she have trilled? could we have trilled? could you have trilled? could they have trilled?	could I have been trilling? could you have been trilling? could she have been trilling? could we have been trilling? could you have been trilling? could they have been trilling?

Forma interro-negativa

Forma semplice	Forma con V-ing
couldn't I trill? couldn't you trill? couldn't she trill? couldn't we trill? couldn't you trill? couldn't they trill?	couldn't I be trilling? couldn't you be trilling? couldn't she be trilling? couldn't we be trilling? couldn't you be trilling? couldn't they be trilling?
Perfetto	Perfetto con V-ing
couldn't I have trilled? couldn't you have trilled? couldn't she have trilled? couldn't we have trilled? couldn't you have trilled? couldn't they have trilled?	couldn't I have been trilling? couldn't you have been trilling? couldn't she have been trilling? couldn't we have been trilling? couldn't you have been trilling? couldn't they have been trilling?