Start with this: Tense - Glossary Definition - UsingEnglish.com
If you have specific questions, post them and someone will reply.
hi i a m an english student, i try to study hard to succed but i have a problem with yhe tences; i speak and read anglish well but when i becomes to tences i a m a looser!
would you please help me
a 'looser' sounds like slang for a nymphomaniac.
Instead of being either, put that mental energy into another post so we can start helping you!