Irregular verb#159 most commonA — A — A

broadcast

Base form

broadcast

/ˈbrɔːdkɑːst//ˈbrɔːdkæst/

Past simple

broadcastbroadcast / broadcasted

/ˈbrɔːdkɑːst//ˈbrɔːdkæst/ /ˈbrɔːdkæstɪd/

Past participle

broadcastbroadcast / broadcasted

/ˈbrɔːdkɑːst//ˈbrɔːdkæst/ /ˈbrɔːdkæstɪd/

MeaningB2

to send out programmes on television or radio

public service broadcasting

In use

After a modal verb · Form 1The BBC will broadcast the match live tonight.
Negative · Form 1Please don’t broadcast my news to everyone yet!
Past simple · Form 2Last night Channel 4 broadcast a documentary about bees.
Past simple · Form 2In 1969 TV stations broadcast the moon landing around the world.
Passive · Form 3The concert was broadcast live from London.
Present perfect · Form 3The station has broadcast the news every hour since 1950.

Watch out

~~broadcastenbroadcost~~

Cast inside never changes: broadcast in all three forms; American English also has broadcasted. ~~Broadcasten~~ and ~~broadcost~~ are wrong.