English does have some irregular verbs that are very important to learn. Knowing the irregular verbs will not only help your spoken English but your written English as well.

Some of the irregular verbs that you should know are:

Infinitive    Simple Past     Past Participle
Forget        Forgot          Forgotten
Buy           Bought          Bought
Catch         Caught          Caught
Lie           Lay             Lain
Hang          Hung            Hung
Sing          Sang            Sung
Be            Was - Were      Been
Shake         Shook           Shaken
Bend          Bent            Bent
Send          Sent            Sent
Blow          Blew            Blown
Swing         Swung           Swung
Begin         Began           Begun
Speak         Spoke           Spoken
Feel          Felt            Felt
Shine         Shone           Shone
Leave         Left            Left

There are many more irregular verbs to learn and study, start with these and then keep adding them to your vocabulary and to your memory!

Verb - Be
Simple Past - Was/Were
Past Participle - Been

Verb - Break
Simple Past - Broke
Past Participle - Broken

Verb - Choose
Simple Past - Chose
Past Participle - Chosen

Verb - Fall
Simple Past - Fell
Past Participle - Fallen

Verb - Fly
Simple Past - Flew
Past Participle - Flown

Verb - Hide
Simple Past - Hid
Past Participle - Hidden

Verb - Know
Simple Past - Knew
Past Participle - Known

Verb - Leave
Simple Past - Left
Past Participle - Left

Verb - See
Simple Past - Saw
Past Participle - Seen

Verb - Write
Simple Past - Wrote
Past Participle - Written

Irregular Verbs

Base Word- Be
Simple Past - Was-Were
3rd Person Singular - Is
Past Participle - Been

Base Word - Bring
Simple Past - Brought
3rd Person Singular - Brings
Past Participle - Brought

Base Word - Drink
Simple Past - Drank
3rd Person Singular - Dreams
Past Participle - Dreamt/Dreamed

Base Word - Eat
Simple Past - Ate
3rd Person Singular - Eats
Past Participle - Eaten

Base Word - Speak
Simple Past - Spoke
3rd Person Singular - Speaks