Irregular verbs

http://www.mansioningles.com/gram53.htm
click here to learn the irregular verbs

Here you can practise easy exercises

click here

Grammar exercises - Articles

http:click here

Grammar rules -ing form

http://www.britishcouncil.org/learnenglish-central-grammar-y-and-i.htm

Here you can have fun and learn English

http://learnenglishkids.britishcouncil.org/en