Tenses and more ...

PRESENT SIMPLE versus PRESENT CONTINUOUS

FUTURE PERFECT versus FUTURE CONTINUOUS

Future: WILL + BE GOING TO+ Present Continuous

PAST TENSES: Past Simple, Present Perfect Simple and Present Perfect Continuous or Progressive

PAST TENSES II: Past Simple, Past Perfect Simple and Past Perfect Continuous
CONDITIONAL TENSES
GERUND or INFINITIVE?
The modal verb SHOULD
MODALverbs of obligation / no obligation / prohibition
THE PASSIVE VOICE
TIME CLAUSES