Academy / English Grammar
#8 The Passive Voice: When the Object Becomes Subject
Mar 1, 2026 · Oiyo
Understand how to form and use the passive voice in English, including tense changes, when to use it, and common mistakes to avoid.
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Academy / English Grammar
#9 If Clauses: Zero, First, Second, and Third Conditionals
Mar 1, 2026 · Oiyo
Master all four English conditional sentence types — zero, first, second, and third — with a clear structure table and common error fixes.
Academy / English Grammar
#10 Gerunds and Infinitives: -ing vs To
Mar 1, 2026 · Oiyo
Learn which verbs take gerunds, which take infinitives, and which take both — including the crucial meaning differences that change everything.
Academy / English Grammar
#11 Modal Verbs: Ability, Permission, Obligation, and Possibility
Mar 1, 2026 · Oiyo
A complete guide to English modal verbs — can, could, may, might, must, should, will, would, and shall — with usage tables and examples.
Academy / English Grammar
#12 Reported Speech: Telling What Others Said
Mar 1, 2026 · Oiyo
Learn how to convert direct speech to reported speech in English, including tense backshift, pronoun changes, and time expression adjustments.
Academy / English Grammar
#13 Relative Clauses: who, which, that, where, when
Mar 1, 2026 · Oiyo
Master English relative clauses — defining vs non-defining, relative pronouns, and how to reduce clauses for more concise writing.
Academy / English Grammar
#14 Top 10 Grammar Errors and How to Fix Them
Mar 1, 2026 · Oiyo
Identify and correct the 10 most common English grammar mistakes — from its/it's confusion to dangling modifiers — with clear correction examples.
Academy / English Grammar
#15 Advanced Grammar: Cohesion, Coherence, and Style
Mar 1, 2026 · Oiyo
Elevate your English writing with advanced grammar tools — discourse markers, parallel structure, sentence variety, and academic hedging language.
Academy / Finance
#1 Alchemy of Wealth: Goals of Finance and Time Value of Money
Mar 1, 2026 · Oiyo
Understand the ultimate goal of financial management—maximizing corporate value—and master the concept of Time Value of Money (TVM), the bedrock of all financial decision-making.
Academy / Finance
#2 Aesthetics of Price and Value: Valuation of Stocks and Bonds
Mar 1, 2026 · Oiyo
Understand how the intrinsic value of financial assets is determined, and master sophisticated valuation methods through Yield to Maturity (YTM) for bonds and the Dividend Discount Model (DDM) for ...