Present Simple Present Continuous Present Perfect He studies He is studying He has studied at the lyceum at the lyceum for two years
Past Simple Past Continuous Past Perfect He studied He was studying He entered the university after he had studied at the lyceum in 2007 at the lyceum from 2005 to 2007 at the lyceum
Present Simple Present Continuous Present Perfect Go/goes Am/is/are going Have/has gone
Past Simple Past Continuous Past Perfect Went Was/were going Had gone