Irregular verb#92 most commonA — B — C

blow

Base form

blow

/bləʊ/

Past simple

blew

/bluː/

Past participle

blown

/bləʊn/

MeaningA2

to send out air from your mouth; to move in the wind

to blow your nose

In use

Imperative · Form 1Blow your nose, then wash your hands.
After a modal verb · Form 1The wind could blow the tent away tonight.
Past simple · Form 2Last night the wind blew a tree down across our road.
Past simple · Form 2Yesterday the referee blew the whistle two minutes early.
Passive · Form 3All the leaves were blown into a pile by the gate.
Present perfect · Form 3Have you blown up all the balloons for the party?

Watch out

~~blewnblowen~~

Blew sounds exactly like blue /bluː/: the wind blew all night. The participle is blown, never ~~blewn~~ or ~~blowen~~: it has blown away.