Basics. Verbs Followed by the To-Infinitive
Verbs Followed by the To-Infinitive
In English, when two verbs are used together, the first verb often forces the second verb into the "to + infinitive" form. For example, we say "I want to leave" or "She promised to help," rather than using the "-ing" form or the base verb alone. Knowing which main verbs trigger this specific pattern is a key step in mastering natural English sentence structure.
This challenge tests your ability to pair common main verbs with the correct infinitive form. You will encounter fun scenarios ranging from a clumsy spy's mission report and a frustrated roommate's complaint letter to live cooking disasters and chaotic road trips. Along the way, you'll practice with essential verbs of intention, agreement, and memory, such as promise, plan, forget, decide, refuse, and agree.
You'll work through 12 questions featuring a mix of drop-down, single-choice, multi-choice, and drag-and-drop formats to reinforce your understanding. Try the quiz to check your knowledge!
Gerund
If you've ever said I enjoy to read or good at to swim and wondered why it sounded wrong, you've met the gerund. English is fussy about which structures take -ing and which take to + verb, and getting this wrong is one of the most common giveaways that someone learned grammar from a list rather than from real usage.
A gerund is the -ing form of a verb acting as a noun: reading, swimming, being late. After many common verbs (enjoy, avoid, finish) and after every preposition, English demands the gerund, never the infinitive.
Infinitive
If you've ever written I enjoy to swim or He let me to go and only later learned why both are wrong, you've hit the infinitive's main puzzle. English is fussy: some verbs demand the to-infinitive, some demand the bare infinitive, some demand the gerund, and a few accept multiple options with different meanings (remember to lock vs remember locking).
The infinitive is the basic form of a verb, used non-finitely. The to-infinitive (to go) follows verbs like want, decide, plan; the bare infinitive (go) follows modal verbs (can, will) and causatives (Let him go).
Past tense
If you've ever told a story in English and felt the timeline get tangled (I came home, the dog ate, the cat slept), you've hit the limits of using simple past for everything. The past tense system has four forms specifically because real stories have layered timing: things that happened before other things, actions caught in progress, sequences of completed events.
The past tense has four English forms: simple past (I walked), past progressive (I was walking), past perfect (I had walked, earlier than another past event), past perfect progressive (I had been walking, ongoing up to a past point). Plus irregular verbs for the simple-past form.
Present tense
If you've ever told someone I am living here for ten years (should be have lived or have been living), you've hit the present perfect's main puzzle. English insists that "started in the past, still true now" lives in the present perfect, not the simple present. Internalise that one rule and a whole class of common errors disappears.
The present tense in English has four forms: simple present (I work) for habits and general truths; present progressive (I am working) for now or temporary; present perfect (I have worked) for past with present relevance; present perfect progressive (I have been working) for ongoing duration up to now.
Verb
If grammar feels overwhelming, the fix is almost always to focus on verbs first. They carry the action, the time, the mood, and the voice; a single verb form decides whether your sentence reads as past or present, fact or hypothetical, active or passive. Get verbs solid and the rest of grammar suddenly looks much smaller.
A verb expresses action, state, or occurrence: the engine of every English sentence. Most verbs have five forms (base, -s, past tense, past participle, -ing); be has eight; modal verbs have fewer. Verbs carry tense, aspect, mood, and voice.
Simple tense
If you're at A1/A2 and the array of English tenses feels overwhelming, here's the good news: most of what you need to say at the start fits in the simple forms. I work, I worked, I will work: three forms cover habits, completed past actions, and basic future. Master these first; the progressive and perfect come more easily once the simple is solid.
The simple aspect is the unmarked verb form: no progressive -ing, no have + past participle. I go, I went, I will go. Marks single completed actions, habits, or permanent states.
Collocations
If your English vocabulary is large but your speech still sounds slightly off (do a mistake, powerful coffee, high winds blew strongly), you've hit the collocation problem. Each word is correct in isolation, but native speakers don't pair them that way. Fixing it isn't about more vocabulary; it's about learning words in their natural company.
Collocations are word combinations that habitually occur together: make a decision, strong coffee, heavy rain, highly unlikely. The grammar permits other pairings, but fluent English consistently chooses one over the rest. They're the connective tissue of natural-sounding language.
A2 | Elementary | Pre-intermediate
If you can order coffee, ask for directions, and tell someone what you did yesterday (but struggle the moment the conversation drifts into anything abstract) you're operating at A2. Knowing this matters: A2 is the level where most learners plateau because they reach for B2 material too early and burn out. Stay here and your foundations get unbreakable.
A2 is the elementary level in the CEFR framework, covering routine communication and the first wave of real grammar: past simple and continuous, present perfect, basic modal verbs, first conditional, and common verb-pattern rules.
Difficulty: Medium
If easy questions feel too obvious but hard questions leave you guessing, you're probably ready for Medium, the level where most real learning happens. It pushes just enough to expose the rules you don't quite have yet, without burying you in edge cases. This is where steady fluency is built, one well-aimed challenge at a time.
The Medium difficulty tag marks middle-range challenges, typically A2 to B1. One rule per question, realistic distractors, and contexts that require active thought rather than instant recognition.