Presentperfectrules
Present perfect rules
Just enough english grammar illustrated
Longman grammar express for self-study and classroom use - 425p
Bredlow - The Grammar of Being
M08_ONEI3218_01_SE_CH08
Checklist for Grammar KBSR (Year 1 - Year 6)
Integrating Grammar for Communicative Language Teaching- Prof.B. L. Handoo
Topic 4 Types of Questions
Countable Uncountable NounsDao
Raymond Lull - Ars Brevis
British English vs American English
