Paidos does not rush. He starts with the parts of speech: nouns (countable/uncountable, the Saxon genitive), pronouns, adjectives (degrees of comparison), and adverbs. His tables for irregular plurals ( child-children, ox-oxen ) and irregular comparisons ( good-better-best ) are among the clearest ever printed.

This is not a "learn English in 30 days" app. The Constantin-paidos-english-grammar-.pdf is for the serious student. Specifically:

Across language forums (WordReference, Reddit r/romanian, and ESL Cafe), the consensus is clear.

Tenses (present, past, future) Week 2: Modals & conditionals Week 3: Passive voice & reported speech Week 4: Prepositions, phrasal verbs, clauses Week 5: Mixed exercises & error analysis Week 6: Full review & mock test