Use free online conjugation tools for immediate help, but use the 501 Verbs book to build a structured, long-term memory of English tenses. If you find a free PDF, check the edition (prefer 6th edition or newer) and scan it for viruses. Better yet, borrow it legally from the Internet Archive for free today.
501 English Verbs: with CD-ROM (501 Verbs Series) - Amazon.com 501 English Verbs Pdf Free Download
The book demystifies the language by taking the most commonly used English verbs and conjugating them in every conceivable tense. This turns a chaotic mess of grammar rules into a neat, organized reference tool. Use free online conjugation tools for immediate help,
Each verb is used in context. You don’t just learn to eat ; you learn She ate breakfast at 8 AM and They will eat later . 501 English Verbs: with CD-ROM (501 Verbs Series) - Amazon