There is no separate TOEFL grammar section — grammar is scored inside everything: Build a Sentence is pure grammar; Writing and Speaking rubrics grade grammatical accuracy; Reading's Complete the Words fails without it. These are the highest-value topics, in study order:
GrammarSentence Structure & Word Order (SVOMPT)
Deep lesson + 50-question quiz with explanations.
Open GrammarRelative Clauses
Deep lesson + 50-question quiz with explanations.
Open GrammarPassive Voice
Deep lesson + 50-question quiz with explanations.
Open GrammarConditionals — all types
Deep lesson + 50-question quiz with explanations.
Open GrammarParticiple Clauses
Deep lesson + 50-question quiz with explanations.
Open GrammarNominalization (academic style)
Deep lesson + 50-question quiz with explanations.
Open GrammarReported Speech
Deep lesson + 50-question quiz with explanations.
Open GrammarArticles — Advanced Uses
Deep lesson + 50-question quiz with explanations.
Open