Let's Go! Complete English Grammar.

Explore the present perfect with for and since, plus just, already, yet, and still, to see how these time expressions express duration and experience.

Learn the future perfect by using will have plus the past participle to express future experience, as in will have eaten, and compare it with the past and present perfect.

Explore the past perfect, present perfect, and future perfect, with clear timelines and examples showing two actions and which comes first, using had plus the past participle.

Master the present perfect: form have/has plus the past participle to express experience and link past actions to the present, contrast with past simple.

Explore four future forms in English: will, going to, present continuous, and present simple, and how attitudes, plans, evidence, fixed arrangements, and official timetables determine their use.

Explains future forms—future simple, future continuous, and future perfect—formed with will and be, including negatives and questions, and clarifies when to use each tense on a timeline.

The second conditional covers imaginary present situations with if plus past and would; the third conditional covers imaginary past outcomes with if plus past perfect and would have past participle.

Explore zero and first conditionals in English, detailing the if clause structure with present tense and future, and show examples like if I drop the pen, the pen falls.

Learn how to use used to for past habits, distinguish it from usually, and master its structure (subject + used to + verb), negatives, questions, and would for action verbs.

Explore the difference between used to and be/get used to, including structure and examples, and how to express past habits, current adaptation, and future changes across tenses.

Explore verb patterns and when to use infinitives or -ing forms after another verb, with guidelines on experience versus no experience and examples like want, enjoy, stop, and remember.

Explore modal verbs as auxiliary verbs used with main verbs to express ability, possibility, obligation, and meaning, with examples such as can, could, may, might, should, must, will, and would.

Explore mixed conditionals in English, two types that blend present imaginary scenarios with past outcomes, using would have and the past participle for confident everyday usage.

Explore modals of obligation: must, have to, and should, distinguishing personal duty from outside requirements, with examples like paying tax, going to the gym, and wearing a seatbelt.

Learn how to use in, on, and at for time and place, including rules for big, medium, and small time chunks, days, dates, festivals, meals, and common locations.

Explore how the passive voice in English shifts focus from the actor to the product, using be and past participle to form passives.

Learn to form English questions by distinguishing closed and open questions, using the verb to be or other verbs, and applying rules for question words, auxiliaries, and word order.

Explore tag questions and indirect questions, learning how to form tag endings with be and auxiliary verbs, use inversions, and soften questions with polite introductions.

Explore how adjectives describe one thing, form comparatives for two nouns, and use superlatives for three or more, with rules for short adjectives, ending in y, and long adjectives.