Free resources
Free English grammar guides
Written for Spanish speakers, with examples and the mistakes they make most often. Free, no sign-up.
English irregular verbs
Full table with past simple and past participle, search and pattern filters.
Present simple (guide in Spanish)
When to use it, how to form it, and why the third-person -s is the most common mistake.
Do and does (guide in Spanish)
Present-tense questions and negatives without hesitating between do, does and don't.
Auxiliary verbs (guide in Spanish)
Be, do, have and the modals: what each one does and how to stop mixing them up.
Personal pronouns (guide in Spanish)
Subject, object and possessive pronouns, with the full table and examples.
The apostrophe (guide in Spanish)
Contractions and possessives: it's or its, and where the 's goes.
English-Spanish false friends
Words that look the same and aren't: actually, embarrassed, library and more.
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