Unit 23. Regular and irregular verbs

BASIC GRAMMAR IN USE

 

Unit 23. Regular and irregular verbs

 

Regular verbs

*The simple past and past participle of regular verbs is -ed.

clean → cleaned  

live → lived

study → studied

 

I cleaned my room yesterday.

I have lived here for 10 years.

These rooms are cleaned every day.

 

Irregular verbs

*The simple past and past participle of irregular verbs do not end in -ed.

	make	break
simple past	made	broke
past participle	made	broken

 

*Sometimes the simple past and past participle are the same.

	find	buy
simple past	found	bought
past participle	found	bought

 

I made a cake yesterday.

I have made some coffee.

Butter is made from milk.

 

 

*Sometimes the simple past and past participle are different.

 

Somebody broke this window last night.

Somebody has broken this window.

The window was broken last week.