Preposition

✅ interested in — ❌ interested on
✅ good at football — ❌ good in football
✅ depend on — ❌ depend of
✅ arrive at the station — ❌ arrive to the station

Prepositions link nouns to the rest of the sentence: time (at 5pm), place (in London), manner (with care), abstract (afraid of). Most are idiomatic — the "correct" preposition must be memorised with each verb/adjective combination.

Rule: there is no universal rule. English prepositions are learned by combination: interested IN, good AT, depend ON, afraid OF. Your native language's equivalent will often mislead.

Verb

walk → walk / walks / walked / walked / walking (5 forms, regular)
go → go / goes / went / gone / going (5 forms, irregular)
be → am/is/are/was/were/be/being/been (8 forms)
can → can / could (modal: only 2 forms, no -s, no -ing)

A verb is the one word class every English sentence requires. Carries tense (when), aspect (duration), mood (attitude), and voice (active/passive). Regular verbs add -ed; ~200 irregular verbs have unpredictable past forms.

Key insight: fix your verbs and most grammar problems disappear. Wrong tense, wrong agreement, wrong form — verb errors account for the majority of grammatical mistakes.

A1 | Elementary | Beginners

✅ My name is Anna. — present simple of be
✅ Where is the station? — basic *wh-*question
✅ I have two brothers. — possession with have
✅ She likes coffee. — third-person -s

These are A1 sentences — the starting level of the CEFR framework. At A1 you can introduce yourself, ask and answer simple personal questions, and handle basic everyday transactions using present tense, be/have/do, and core vocabulary.

If you can say these but freeze at normal speaking speed, you're solidly A1 — and that's exactly where to start.

Easy

She is a teacher. — one verb form, one rule
I have two cats. — basic possession, short sentence
He doesn't like coffee. — simple negation with do-support
Only one answer is clearly correct; distractors are obviously wrong.

Easy marks beginner-level challenges: A1–early A2, one rule at a time, everyday vocabulary, no trick questions.

Use "Easy" when you want to build confidence on a specific rule without interference from other grammar or tricky contexts.